/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:34,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:34,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:34,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:34,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:34,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:34,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:34,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:34,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:34,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:34,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:34,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:34,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:34,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:34,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:34,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:34,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:34,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:34,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:34,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:34,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:34,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:34,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:34,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:34,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:46:34,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:34,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:34,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:34,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:46:34,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:34,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:34,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:34,200 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:34,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:34,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:34,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:34,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:34,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:34,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:34,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:34,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:34,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:34,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:34,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:34,205 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:34,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:34,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:34,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:34,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:34,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:34,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:34,206 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:34,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:34,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:34,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:34,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:34,665 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:34,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-02-23 18:46:34,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b2ba900/c3041e2f9db641238bf6c1877a869763/FLAG1b63075d2 [2021-02-23 18:46:35,468 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:35,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-02-23 18:46:35,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b2ba900/c3041e2f9db641238bf6c1877a869763/FLAG1b63075d2 [2021-02-23 18:46:35,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b2ba900/c3041e2f9db641238bf6c1877a869763 [2021-02-23 18:46:35,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:35,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:35,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:35,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:35,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:35,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:35" (1/1) ... [2021-02-23 18:46:35,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34777c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:35, skipping insertion in model container [2021-02-23 18:46:35,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:35" (1/1) ... [2021-02-23 18:46:35,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:35,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:36,086 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-02-23 18:46:36,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:36,124 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:36,139 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-02-23 18:46:36,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:36,174 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:36,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36 WrapperNode [2021-02-23 18:46:36,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:36,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:36,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:36,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:36,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (1/1) ... [2021-02-23 18:46:36,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (1/1) ... [2021-02-23 18:46:36,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (1/1) ... [2021-02-23 18:46:36,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (1/1) ... [2021-02-23 18:46:36,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (1/1) ... [2021-02-23 18:46:36,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (1/1) ... [2021-02-23 18:46:36,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (1/1) ... [2021-02-23 18:46:36,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:36,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:36,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:36,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:36,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (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 18:46:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2021-02-23 18:46:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2021-02-23 18:46:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:46:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:46:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2021-02-23 18:46:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2021-02-23 18:46:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:36,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:36,979 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-23 18:46:36,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:36 BoogieIcfgContainer [2021-02-23 18:46:36,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:36,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:36,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:36,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:36,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:35" (1/3) ... [2021-02-23 18:46:36,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae2e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:36, skipping insertion in model container [2021-02-23 18:46:36,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:36" (2/3) ... [2021-02-23 18:46:36,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae2e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:36, skipping insertion in model container [2021-02-23 18:46:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:36" (3/3) ... [2021-02-23 18:46:36,992 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2021-02-23 18:46:37,000 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:37,005 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:37,027 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:37,052 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:37,052 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:37,052 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:37,053 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:37,053 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:37,053 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:37,053 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:37,053 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2021-02-23 18:46:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 18:46:37,085 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:37,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:37,087 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:37,094 INFO L82 PathProgramCache]: Analyzing trace with hash 924707532, now seen corresponding path program 1 times [2021-02-23 18:46:37,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:37,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996523274] [2021-02-23 18:46:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:37,196 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:37,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:37,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:37,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:37,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:37,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:37,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:37,375 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 18:46:37,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996523274] [2021-02-23 18:46:37,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:37,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:37,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849490683] [2021-02-23 18:46:37,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:37,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:37,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:37,404 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 3 states. [2021-02-23 18:46:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:37,771 INFO L93 Difference]: Finished difference Result 250 states and 300 transitions. [2021-02-23 18:46:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:37,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-02-23 18:46:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:37,784 INFO L225 Difference]: With dead ends: 250 [2021-02-23 18:46:37,785 INFO L226 Difference]: Without dead ends: 127 [2021-02-23 18:46:37,789 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 18:46:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-23 18:46:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-02-23 18:46:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-02-23 18:46:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2021-02-23 18:46:37,854 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 27 [2021-02-23 18:46:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:37,854 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2021-02-23 18:46:37,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2021-02-23 18:46:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 18:46:37,857 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:37,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:37,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:37,858 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash -783663999, now seen corresponding path program 1 times [2021-02-23 18:46:37,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:37,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747821048] [2021-02-23 18:46:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:37,863 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:37,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:37,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:37,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:37,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:37,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:37,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:37,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:37,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:37,996 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 18:46:37,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747821048] [2021-02-23 18:46:37,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:37,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:46:37,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476273542] [2021-02-23 18:46:37,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:46:38,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:38,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:46:38,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:46:38,002 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand 4 states. [2021-02-23 18:46:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:38,340 INFO L93 Difference]: Finished difference Result 307 states and 346 transitions. [2021-02-23 18:46:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:46:38,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-23 18:46:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:38,344 INFO L225 Difference]: With dead ends: 307 [2021-02-23 18:46:38,345 INFO L226 Difference]: Without dead ends: 203 [2021-02-23 18:46:38,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:46:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-02-23 18:46:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 128. [2021-02-23 18:46:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-02-23 18:46:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-02-23 18:46:38,371 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 27 [2021-02-23 18:46:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:38,371 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-02-23 18:46:38,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:46:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-02-23 18:46:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 18:46:38,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:38,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:38,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:38,374 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1860069282, now seen corresponding path program 1 times [2021-02-23 18:46:38,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:38,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454590495] [2021-02-23 18:46:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:38,405 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:38,408 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:38,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:38,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:38,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:38,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:38,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:38,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:38,521 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 18:46:38,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454590495] [2021-02-23 18:46:38,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:38,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:46:38,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188574461] [2021-02-23 18:46:38,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:46:38,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:38,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:46:38,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:38,526 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand 6 states. [2021-02-23 18:46:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:38,957 INFO L93 Difference]: Finished difference Result 314 states and 353 transitions. [2021-02-23 18:46:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:46:38,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-23 18:46:38,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:38,960 INFO L225 Difference]: With dead ends: 314 [2021-02-23 18:46:38,961 INFO L226 Difference]: Without dead ends: 210 [2021-02-23 18:46:38,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:46:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-02-23 18:46:38,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 135. [2021-02-23 18:46:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-23 18:46:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2021-02-23 18:46:38,981 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 34 [2021-02-23 18:46:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:38,983 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2021-02-23 18:46:38,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:46:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2021-02-23 18:46:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 18:46:38,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:38,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:38,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:46:38,985 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:38,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1505860065, now seen corresponding path program 2 times [2021-02-23 18:46:38,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:38,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296377893] [2021-02-23 18:46:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:38,997 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:39,000 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:39,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:39,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:46:39,129 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-23 18:46:39,130 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-23 18:46:39,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,161 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 18:46:39,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296377893] [2021-02-23 18:46:39,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:39,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:46:39,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024204910] [2021-02-23 18:46:39,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:46:39,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:46:39,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:46:39,164 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand 5 states. [2021-02-23 18:46:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:39,414 INFO L93 Difference]: Finished difference Result 245 states and 273 transitions. [2021-02-23 18:46:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:46:39,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2021-02-23 18:46:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:39,416 INFO L225 Difference]: With dead ends: 245 [2021-02-23 18:46:39,416 INFO L226 Difference]: Without dead ends: 140 [2021-02-23 18:46:39,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-02-23 18:46:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2021-02-23 18:46:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-02-23 18:46:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2021-02-23 18:46:39,434 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 41 [2021-02-23 18:46:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:39,434 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2021-02-23 18:46:39,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:46:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2021-02-23 18:46:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-23 18:46:39,437 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:39,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:39,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:46:39,440 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1998965988, now seen corresponding path program 1 times [2021-02-23 18:46:39,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:39,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252812028] [2021-02-23 18:46:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:39,454 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:39,456 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:39,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 18:46:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 18:46:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,639 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 18:46:39,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252812028] [2021-02-23 18:46:39,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:39,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:46:39,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166226355] [2021-02-23 18:46:39,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:46:39,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:39,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:46:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:46:39,649 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand 5 states. [2021-02-23 18:46:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:39,918 INFO L93 Difference]: Finished difference Result 267 states and 296 transitions. [2021-02-23 18:46:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:46:39,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2021-02-23 18:46:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:39,923 INFO L225 Difference]: With dead ends: 267 [2021-02-23 18:46:39,923 INFO L226 Difference]: Without dead ends: 176 [2021-02-23 18:46:39,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:39,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-02-23 18:46:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 135. [2021-02-23 18:46:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-23 18:46:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2021-02-23 18:46:39,943 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 77 [2021-02-23 18:46:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:39,944 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2021-02-23 18:46:39,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:46:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2021-02-23 18:46:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-23 18:46:39,946 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:39,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:39,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:46:39,947 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1109717656, now seen corresponding path program 1 times [2021-02-23 18:46:39,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:39,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42639141] [2021-02-23 18:46:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:39,955 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:39,956 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:40,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:40,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:40,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-23 18:46:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-23 18:46:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,061 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 18:46:40,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42639141] [2021-02-23 18:46:40,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:40,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:46:40,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550725529] [2021-02-23 18:46:40,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:46:40,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:40,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:46:40,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:46:40,064 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand 7 states. [2021-02-23 18:46:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:40,461 INFO L93 Difference]: Finished difference Result 274 states and 303 transitions. [2021-02-23 18:46:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:46:40,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2021-02-23 18:46:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:40,463 INFO L225 Difference]: With dead ends: 274 [2021-02-23 18:46:40,463 INFO L226 Difference]: Without dead ends: 183 [2021-02-23 18:46:40,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:46:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-02-23 18:46:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2021-02-23 18:46:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-02-23 18:46:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2021-02-23 18:46:40,483 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 84 [2021-02-23 18:46:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:40,483 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2021-02-23 18:46:40,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:46:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2021-02-23 18:46:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-23 18:46:40,485 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:40,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:40,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:46:40,486 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1289285732, now seen corresponding path program 2 times [2021-02-23 18:46:40,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:40,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415613939] [2021-02-23 18:46:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:40,494 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:40,495 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:40,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-23 18:46:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 18:46:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,651 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 18:46:40,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415613939] [2021-02-23 18:46:40,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:40,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:46:40,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713865120] [2021-02-23 18:46:40,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:46:40,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:40,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:46:40,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:40,658 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand 6 states. [2021-02-23 18:46:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:40,962 INFO L93 Difference]: Finished difference Result 226 states and 249 transitions. [2021-02-23 18:46:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:46:40,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2021-02-23 18:46:40,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:40,966 INFO L225 Difference]: With dead ends: 226 [2021-02-23 18:46:40,966 INFO L226 Difference]: Without dead ends: 148 [2021-02-23 18:46:40,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:46:40,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-23 18:46:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-02-23 18:46:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-02-23 18:46:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2021-02-23 18:46:40,983 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 91 [2021-02-23 18:46:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:40,983 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2021-02-23 18:46:40,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:46:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2021-02-23 18:46:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-02-23 18:46:40,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:40,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:40,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:46:40,986 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:40,987 INFO L82 PathProgramCache]: Analyzing trace with hash -658826803, now seen corresponding path program 1 times [2021-02-23 18:46:40,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:40,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165427375] [2021-02-23 18:46:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:40,994 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:40,995 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:41,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-23 18:46:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:41,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:41,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:41,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-23 18:46:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,150 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 18:46:41,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165427375] [2021-02-23 18:46:41,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:41,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:46:41,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489655460] [2021-02-23 18:46:41,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:46:41,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:41,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:46:41,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:46:41,153 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 8 states. [2021-02-23 18:46:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:41,454 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2021-02-23 18:46:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:46:41,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2021-02-23 18:46:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:41,455 INFO L225 Difference]: With dead ends: 192 [2021-02-23 18:46:41,456 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:46:41,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:46:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:46:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:46:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:46:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:46:41,458 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2021-02-23 18:46:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:41,458 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:46:41,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:46:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:46:41,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:46:41,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:46:41,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:46:42,325 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 18:46:42,325 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 18:46:42,325 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 18:46:42,325 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-23 18:46:42,326 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-23 18:46:42,326 INFO L192 CegarLoopUtils]: At program point elem_existsENTRY(lines 20 26) the Hoare annotation is: true [2021-02-23 18:46:42,326 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,326 INFO L185 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,327 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (= elem_exists_~size |elem_exists_#in~size|) [2021-02-23 18:46:42,327 INFO L185 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,327 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,327 INFO L185 CegarLoopUtils]: At program point L23-4(line 23) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,327 INFO L185 CegarLoopUtils]: At program point elem_existsFINAL(lines 20 26) the Hoare annotation is: (let ((.cse0 (= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= 0 elem_exists_~i~0) (<= 0 |elem_exists_#res|) .cse0 (<= |elem_exists_#res| 0)) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2021-02-23 18:46:42,328 INFO L185 CegarLoopUtils]: At program point elem_existsEXIT(lines 20 26) the Hoare annotation is: (let ((.cse0 (= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= 0 elem_exists_~i~0) (<= 0 |elem_exists_#res|) .cse0 (<= |elem_exists_#res| 0)) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2021-02-23 18:46:42,328 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (= elem_exists_~size |elem_exists_#in~size|) [2021-02-23 18:46:42,328 INFO L192 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: true [2021-02-23 18:46:42,328 INFO L185 CegarLoopUtils]: At program point L20-1(lines 20 26) the Hoare annotation is: (= elem_exists_~size |elem_exists_#in~size|) [2021-02-23 18:46:42,328 INFO L185 CegarLoopUtils]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,328 INFO L185 CegarLoopUtils]: At program point L22-4(line 22) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,329 INFO L185 CegarLoopUtils]: At program point L22-5(line 22) the Hoare annotation is: (and (= elem_exists_~size |elem_exists_#in~size|) (<= 1 |elem_exists_#in~size|)) [2021-02-23 18:46:42,329 INFO L185 CegarLoopUtils]: At program point L22-6(lines 22 24) the Hoare annotation is: (let ((.cse0 (= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= 0 elem_exists_~i~0) .cse0) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2021-02-23 18:46:42,329 INFO L185 CegarLoopUtils]: At program point L22-7(lines 22 24) the Hoare annotation is: (and (<= 0 elem_exists_~i~0) (= elem_exists_~size |elem_exists_#in~size|)) [2021-02-23 18:46:42,329 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:46:42,329 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:46:42,329 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-23 18:46:42,330 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-23 18:46:42,330 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 18:46:42,330 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-23 18:46:42,330 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(#t~string1.offset)| |#t~string1.offset|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 18:46:42,330 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-23 18:46:42,330 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:46:42,331 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-23 18:46:42,331 INFO L192 CegarLoopUtils]: At program point L16(lines 16 19) the Hoare annotation is: true [2021-02-23 18:46:42,331 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-23 18:46:42,331 INFO L192 CegarLoopUtils]: At program point insertENTRY(lines 16 19) the Hoare annotation is: true [2021-02-23 18:46:42,331 INFO L192 CegarLoopUtils]: At program point L16-1(lines 16 19) the Hoare annotation is: true [2021-02-23 18:46:42,332 INFO L192 CegarLoopUtils]: At program point insertFINAL(lines 16 19) the Hoare annotation is: true [2021-02-23 18:46:42,332 INFO L192 CegarLoopUtils]: At program point insertEXIT(lines 16 19) the Hoare annotation is: true [2021-02-23 18:46:42,332 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:46:42,332 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:46:42,332 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:46:42,332 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:46:42,333 INFO L185 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,333 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 27 67) the Hoare annotation is: true [2021-02-23 18:46:42,333 INFO L185 CegarLoopUtils]: At program point L52(line 52) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,333 INFO L185 CegarLoopUtils]: At program point L52-1(line 52) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,333 INFO L185 CegarLoopUtils]: At program point L52-2(line 52) the Hoare annotation is: (and (= |main_#t~ret15| 0) (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,333 INFO L185 CegarLoopUtils]: At program point L52-3(lines 52 54) the Hoare annotation is: (and (= |main_#t~ret15| 0) (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,333 INFO L185 CegarLoopUtils]: At program point L52-4(line 52) the Hoare annotation is: false [2021-02-23 18:46:42,334 INFO L185 CegarLoopUtils]: At program point L52-5(line 52) the Hoare annotation is: false [2021-02-23 18:46:42,334 INFO L185 CegarLoopUtils]: At program point L52-7(line 52) the Hoare annotation is: (and (= |main_#t~ret15| 0) (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,334 INFO L185 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,334 INFO L185 CegarLoopUtils]: At program point L52-8(line 52) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,334 INFO L185 CegarLoopUtils]: At program point L52-9(lines 52 54) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,335 INFO L192 CegarLoopUtils]: At program point L44-1(line 44) the Hoare annotation is: true [2021-02-23 18:46:42,335 INFO L192 CegarLoopUtils]: At program point L44-2(line 44) the Hoare annotation is: true [2021-02-23 18:46:42,335 INFO L185 CegarLoopUtils]: At program point L61-2(lines 61 65) the Hoare annotation is: false [2021-02-23 18:46:42,335 INFO L185 CegarLoopUtils]: At program point L61-3(line 61) the Hoare annotation is: false [2021-02-23 18:46:42,335 INFO L185 CegarLoopUtils]: At program point L61-4(line 61) the Hoare annotation is: false [2021-02-23 18:46:42,335 INFO L185 CegarLoopUtils]: At program point L61-5(lines 61 65) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,335 INFO L192 CegarLoopUtils]: At program point L61-6(lines 61 65) the Hoare annotation is: true [2021-02-23 18:46:42,336 INFO L185 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: false [2021-02-23 18:46:42,336 INFO L185 CegarLoopUtils]: At program point L53-1(line 53) the Hoare annotation is: false [2021-02-23 18:46:42,336 INFO L185 CegarLoopUtils]: At program point L53-2(line 53) the Hoare annotation is: false [2021-02-23 18:46:42,336 INFO L185 CegarLoopUtils]: At program point L53-3(line 53) the Hoare annotation is: false [2021-02-23 18:46:42,336 INFO L185 CegarLoopUtils]: At program point L53-4(line 53) the Hoare annotation is: false [2021-02-23 18:46:42,336 INFO L185 CegarLoopUtils]: At program point L53-5(line 53) the Hoare annotation is: false [2021-02-23 18:46:42,336 INFO L185 CegarLoopUtils]: At program point L62(line 62) the Hoare annotation is: false [2021-02-23 18:46:42,337 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|) (= main_~n~0 0)) [2021-02-23 18:46:42,337 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= main_~n~0 0)) [2021-02-23 18:46:42,337 INFO L185 CegarLoopUtils]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2021-02-23 18:46:42,337 INFO L192 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: true [2021-02-23 18:46:42,337 INFO L185 CegarLoopUtils]: At program point L62-4(line 62) the Hoare annotation is: false [2021-02-23 18:46:42,337 INFO L192 CegarLoopUtils]: At program point L29-3(line 29) the Hoare annotation is: true [2021-02-23 18:46:42,337 INFO L185 CegarLoopUtils]: At program point L62-5(line 62) the Hoare annotation is: false [2021-02-23 18:46:42,338 INFO L185 CegarLoopUtils]: At program point L62-6(lines 62 64) the Hoare annotation is: false [2021-02-23 18:46:42,338 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 27 67) the Hoare annotation is: true [2021-02-23 18:46:42,338 INFO L185 CegarLoopUtils]: At program point L63(line 63) the Hoare annotation is: false [2021-02-23 18:46:42,338 INFO L185 CegarLoopUtils]: At program point L63-1(line 63) the Hoare annotation is: false [2021-02-23 18:46:42,338 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 27 67) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 18:46:42,338 INFO L185 CegarLoopUtils]: At program point L63-2(line 63) the Hoare annotation is: false [2021-02-23 18:46:42,338 INFO L185 CegarLoopUtils]: At program point L63-3(line 63) the Hoare annotation is: false [2021-02-23 18:46:42,339 INFO L185 CegarLoopUtils]: At program point L63-4(line 63) the Hoare annotation is: false [2021-02-23 18:46:42,339 INFO L185 CegarLoopUtils]: At program point L55-2(lines 55 59) the Hoare annotation is: false [2021-02-23 18:46:42,339 INFO L185 CegarLoopUtils]: At program point L55-3(line 55) the Hoare annotation is: false [2021-02-23 18:46:42,339 INFO L185 CegarLoopUtils]: At program point L55-4(line 55) the Hoare annotation is: false [2021-02-23 18:46:42,339 INFO L185 CegarLoopUtils]: At program point L55-5(lines 55 59) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,339 INFO L185 CegarLoopUtils]: At program point L47(line 47) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,339 INFO L185 CegarLoopUtils]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,340 INFO L185 CegarLoopUtils]: At program point L47-4(line 47) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,340 INFO L185 CegarLoopUtils]: At program point L47-5(line 47) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,340 INFO L185 CegarLoopUtils]: At program point L47-6(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,340 INFO L185 CegarLoopUtils]: At program point L47-7(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,340 INFO L185 CegarLoopUtils]: At program point L39-2(lines 39 43) the Hoare annotation is: false [2021-02-23 18:46:42,340 INFO L185 CegarLoopUtils]: At program point L39-3(line 39) the Hoare annotation is: false [2021-02-23 18:46:42,340 INFO L185 CegarLoopUtils]: At program point L39-4(line 39) the Hoare annotation is: false [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L39-5(lines 39 43) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L39-6(lines 39 43) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= main_~n~0 0)) [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L56(line 56) the Hoare annotation is: false [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L56-4(line 56) the Hoare annotation is: false [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L56-5(line 56) the Hoare annotation is: false [2021-02-23 18:46:42,341 INFO L185 CegarLoopUtils]: At program point L56-6(lines 56 58) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L40-4(line 40) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L40-5(line 40) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L40-6(lines 40 42) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L57-1(line 57) the Hoare annotation is: false [2021-02-23 18:46:42,342 INFO L185 CegarLoopUtils]: At program point L57-2(line 57) the Hoare annotation is: false [2021-02-23 18:46:42,343 INFO L185 CegarLoopUtils]: At program point L57-3(line 57) the Hoare annotation is: false [2021-02-23 18:46:42,343 INFO L185 CegarLoopUtils]: At program point L57-4(line 57) the Hoare annotation is: false [2021-02-23 18:46:42,343 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,343 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,343 INFO L185 CegarLoopUtils]: At program point L49-2(line 49) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,343 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: false [2021-02-23 18:46:42,343 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: false [2021-02-23 18:46:42,344 INFO L185 CegarLoopUtils]: At program point L41-2(line 41) the Hoare annotation is: false [2021-02-23 18:46:42,344 INFO L185 CegarLoopUtils]: At program point L41-3(line 41) the Hoare annotation is: false [2021-02-23 18:46:42,344 INFO L185 CegarLoopUtils]: At program point L41-4(line 41) the Hoare annotation is: false [2021-02-23 18:46:42,344 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= main_~n~0 0)) [2021-02-23 18:46:42,344 INFO L185 CegarLoopUtils]: At program point L33-3(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,344 INFO L185 CegarLoopUtils]: At program point L33-4(line 33) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,344 INFO L185 CegarLoopUtils]: At program point L33-5(line 33) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,345 INFO L185 CegarLoopUtils]: At program point L33-6(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,345 INFO L185 CegarLoopUtils]: At program point L33-7(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,345 INFO L185 CegarLoopUtils]: At program point L51-2(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,345 INFO L185 CegarLoopUtils]: At program point L51-3(line 51) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,345 INFO L185 CegarLoopUtils]: At program point L51-4(line 51) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,345 INFO L185 CegarLoopUtils]: At program point L51-5(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,345 INFO L185 CegarLoopUtils]: At program point L51-6(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-23 18:46:42,346 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,346 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (= main_~n~0 0) [2021-02-23 18:46:42,346 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2021-02-23 18:46:42,346 INFO L192 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: true [2021-02-23 18:46:42,346 INFO L192 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: true [2021-02-23 18:46:42,346 INFO L192 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: true [2021-02-23 18:46:42,346 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(line 13) the Hoare annotation is: true [2021-02-23 18:46:42,347 INFO L192 CegarLoopUtils]: At program point L13-4(line 13) the Hoare annotation is: true [2021-02-23 18:46:42,347 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: true [2021-02-23 18:46:42,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:42 BoogieIcfgContainer [2021-02-23 18:46:42,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:42,372 INFO L168 Benchmark]: Toolchain (without parser) took 6551.32 ms. Allocated memory was 159.4 MB in the beginning and 243.3 MB in the end (delta: 83.9 MB). Free memory was 135.9 MB in the beginning and 199.5 MB in the end (delta: -63.6 MB). Peak memory consumption was 136.6 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:42,373 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 159.4 MB. Free memory was 133.7 MB in the beginning and 133.6 MB in the end (delta: 82.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:42,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.06 ms. Allocated memory is still 159.4 MB. Free memory was 134.9 MB in the beginning and 124.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:42,374 INFO L168 Benchmark]: Boogie Preprocessor took 46.86 ms. Allocated memory is still 159.4 MB. Free memory was 124.4 MB in the beginning and 122.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:42,375 INFO L168 Benchmark]: RCFGBuilder took 757.07 ms. Allocated memory is still 159.4 MB. Free memory was 122.3 MB in the beginning and 125.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:42,376 INFO L168 Benchmark]: TraceAbstraction took 5387.16 ms. Allocated memory was 159.4 MB in the beginning and 243.3 MB in the end (delta: 83.9 MB). Free memory was 124.8 MB in the beginning and 199.5 MB in the end (delta: -74.7 MB). Peak memory consumption was 126.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:42,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 159.4 MB. Free memory was 133.7 MB in the beginning and 133.6 MB in the end (delta: 82.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.06 ms. Allocated memory is still 159.4 MB. Free memory was 134.9 MB in the beginning and 124.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.86 ms. Allocated memory is still 159.4 MB. Free memory was 124.4 MB in the beginning and 122.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 757.07 ms. Allocated memory is still 159.4 MB. Free memory was 122.3 MB in the beginning and 125.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5387.16 ms. Allocated memory was 159.4 MB in the beginning and 243.3 MB in the end (delta: 83.9 MB). Free memory was 124.8 MB in the beginning and 199.5 MB in the end (delta: -74.7 MB). Peak memory consumption was 126.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 <= i && size == \old(size)) || (size == \old(size) && 1 <= \old(size)) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - ProcedureContractResult [Line: 20]: Procedure Contract for elem_exists Derived contract for procedure elem_exists: (((0 <= i && 0 <= \result) && size == \old(size)) && \result <= 0) || (size == \old(size) && 1 <= \old(size)) - ProcedureContractResult [Line: 16]: Procedure Contract for insert Derived contract for procedure insert: 1 - ProcedureContractResult [Line: 27]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 142 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 934 SDtfs, 754 SDslu, 1169 SDs, 0 SdLazy, 1516 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 238 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 137 LocationsWithAnnotation, 506 PreInvPairs, 576 NumberOfFragments, 495 HoareAnnotationTreeSize, 506 FomulaSimplifications, 1302 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 137 FomulaSimplificationsInter, 598 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...