/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-b7b32d2 [2021-02-21 21:16:04,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:04,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:04,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:04,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:04,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:04,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:04,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:04,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:04,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:04,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:04,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:04,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:04,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:04,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:04,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:04,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:04,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:04,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:04,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:04,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:04,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:04,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:04,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:04,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:04,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:04,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:04,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:04,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:04,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:04,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:04,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:04,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:04,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:04,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:04,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:04,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:04,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:04,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:04,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:04,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:04,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:04,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:04,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:04,221 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:04,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:04,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:04,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:04,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:04,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:04,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:04,223 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:04,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:04,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:04,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:04,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:04,674 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:04,675 INFO L432 ainManager$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 [2021-02-21 21:16:04,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e951b82/2ec1ef3ac4cd4fceac6db9e3d6ad4ff3/FLAG29a8987e9 [2021-02-21 21:16:05,442 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:05,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-02-21 21:16:05,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e951b82/2ec1ef3ac4cd4fceac6db9e3d6ad4ff3/FLAG29a8987e9 [2021-02-21 21:16:05,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e951b82/2ec1ef3ac4cd4fceac6db9e3d6ad4ff3 [2021-02-21 21:16:05,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:05,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:05,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:05,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:05,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:05,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:05" (1/1) ... [2021-02-21 21:16:05,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483d983b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:05, skipping insertion in model container [2021-02-21 21:16:05,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:05" (1/1) ... [2021-02-21 21:16:05,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:05,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:06,019 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] [2021-02-21 21:16:06,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:06,055 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:06,069 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] [2021-02-21 21:16:06,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:06,105 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:06,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06 WrapperNode [2021-02-21 21:16:06,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:06,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:06,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:06,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:06,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... [2021-02-21 21:16:06,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... [2021-02-21 21:16:06,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... [2021-02-21 21:16:06,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... [2021-02-21 21:16:06,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... [2021-02-21 21:16:06,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... [2021-02-21 21:16:06,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... [2021-02-21 21:16:06,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:06,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:06,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:06,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:06,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:06,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:06,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:06,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:06,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:06,297 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2021-02-21 21:16:06,298 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2021-02-21 21:16:06,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:16:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:16:06,300 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:06,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:06,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2021-02-21 21:16:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2021-02-21 21:16:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:06,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:06,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:06,955 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-21 21:16:06,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:06 BoogieIcfgContainer [2021-02-21 21:16:06,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:06,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:06,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:06,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:06,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:05" (1/3) ... [2021-02-21 21:16:06,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ded4200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:06, skipping insertion in model container [2021-02-21 21:16:06,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:06" (2/3) ... [2021-02-21 21:16:06,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ded4200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:06, skipping insertion in model container [2021-02-21 21:16:06,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:06" (3/3) ... [2021-02-21 21:16:06,967 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2021-02-21 21:16:06,977 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:06,983 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:07,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:07,023 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:07,023 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:07,023 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:07,024 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:07,024 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:07,024 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:07,024 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:07,024 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2021-02-21 21:16:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 21:16:07,053 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:07,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:07,054 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:07,061 INFO L82 PathProgramCache]: Analyzing trace with hash 924707532, now seen corresponding path program 1 times [2021-02-21 21:16:07,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:07,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200088729] [2021-02-21 21:16:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:07,151 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:07,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:07,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:07,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:07,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:07,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:07,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:07,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:07,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200088729] [2021-02-21 21:16:07,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:07,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:07,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620632529] [2021-02-21 21:16:07,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:07,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:07,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:07,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:07,422 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 3 states. [2021-02-21 21:16:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:07,759 INFO L93 Difference]: Finished difference Result 250 states and 300 transitions. [2021-02-21 21:16:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:07,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-02-21 21:16:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:07,776 INFO L225 Difference]: With dead ends: 250 [2021-02-21 21:16:07,776 INFO L226 Difference]: Without dead ends: 127 [2021-02-21 21:16:07,783 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 [2021-02-21 21:16:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-21 21:16:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-02-21 21:16:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-02-21 21:16:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2021-02-21 21:16:07,901 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 27 [2021-02-21 21:16:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:07,901 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2021-02-21 21:16:07,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2021-02-21 21:16:07,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 21:16:07,905 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:07,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:07,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:07,909 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:07,910 INFO L82 PathProgramCache]: Analyzing trace with hash -783663999, now seen corresponding path program 1 times [2021-02-21 21:16:07,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:07,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845413644] [2021-02-21 21:16:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:07,918 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:08,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:08,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:08,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:08,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:08,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:08,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845413644] [2021-02-21 21:16:08,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:08,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:16:08,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634901336] [2021-02-21 21:16:08,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:16:08,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:16:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:16:08,087 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand 4 states. [2021-02-21 21:16:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:08,423 INFO L93 Difference]: Finished difference Result 307 states and 346 transitions. [2021-02-21 21:16:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:16:08,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-21 21:16:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:08,426 INFO L225 Difference]: With dead ends: 307 [2021-02-21 21:16:08,427 INFO L226 Difference]: Without dead ends: 203 [2021-02-21 21:16:08,429 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 [2021-02-21 21:16:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-02-21 21:16:08,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 128. [2021-02-21 21:16:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-02-21 21:16:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-02-21 21:16:08,452 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 27 [2021-02-21 21:16:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:08,453 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-02-21 21:16:08,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:16:08,453 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-02-21 21:16:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-21 21:16:08,454 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:08,455 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] [2021-02-21 21:16:08,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:08,455 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:08,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1860069282, now seen corresponding path program 1 times [2021-02-21 21:16:08,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:08,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660308089] [2021-02-21 21:16:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:08,488 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:08,489 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:08,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:08,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:08,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:08,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:08,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:08,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:08,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:08,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660308089] [2021-02-21 21:16:08,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:08,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:16:08,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196728874] [2021-02-21 21:16:08,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:16:08,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:08,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:16:08,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:16:08,634 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand 6 states. [2021-02-21 21:16:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:09,044 INFO L93 Difference]: Finished difference Result 314 states and 353 transitions. [2021-02-21 21:16:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:16:09,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-21 21:16:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:09,048 INFO L225 Difference]: With dead ends: 314 [2021-02-21 21:16:09,048 INFO L226 Difference]: Without dead ends: 210 [2021-02-21 21:16:09,049 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 [2021-02-21 21:16:09,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-02-21 21:16:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 135. [2021-02-21 21:16:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-21 21:16:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2021-02-21 21:16:09,068 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 34 [2021-02-21 21:16:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:09,068 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2021-02-21 21:16:09,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:16:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2021-02-21 21:16:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-21 21:16:09,070 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:09,070 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] [2021-02-21 21:16:09,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:09,071 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1505860065, now seen corresponding path program 2 times [2021-02-21 21:16:09,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:09,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218693275] [2021-02-21 21:16:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:09,080 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:09,081 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:09,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:09,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:09,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:16:09,153 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-21 21:16:09,154 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-21 21:16:09,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:09,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:09,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218693275] [2021-02-21 21:16:09,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:09,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:09,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195757455] [2021-02-21 21:16:09,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:09,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:09,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:09,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:09,191 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand 5 states. [2021-02-21 21:16:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:09,463 INFO L93 Difference]: Finished difference Result 245 states and 273 transitions. [2021-02-21 21:16:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:09,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2021-02-21 21:16:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:09,466 INFO L225 Difference]: With dead ends: 245 [2021-02-21 21:16:09,466 INFO L226 Difference]: Without dead ends: 140 [2021-02-21 21:16:09,467 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 [2021-02-21 21:16:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-02-21 21:16:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2021-02-21 21:16:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-02-21 21:16:09,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2021-02-21 21:16:09,483 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 41 [2021-02-21 21:16:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:09,484 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2021-02-21 21:16:09,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:09,484 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2021-02-21 21:16:09,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-21 21:16:09,488 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:09,488 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] [2021-02-21 21:16:09,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:16:09,488 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:09,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1998965988, now seen corresponding path program 1 times [2021-02-21 21:16:09,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:09,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172811788] [2021-02-21 21:16:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:09,509 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:09,511 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:09,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:09,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:09,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:16:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:09,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-21 21:16:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:09,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:09,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:09,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172811788] [2021-02-21 21:16:09,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:09,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:09,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115924321] [2021-02-21 21:16:09,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:09,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:09,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:09,634 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand 5 states. [2021-02-21 21:16:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:09,951 INFO L93 Difference]: Finished difference Result 267 states and 296 transitions. [2021-02-21 21:16:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:09,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2021-02-21 21:16:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:09,953 INFO L225 Difference]: With dead ends: 267 [2021-02-21 21:16:09,954 INFO L226 Difference]: Without dead ends: 176 [2021-02-21 21:16:09,955 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 [2021-02-21 21:16:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-02-21 21:16:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 135. [2021-02-21 21:16:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-21 21:16:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2021-02-21 21:16:09,973 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 77 [2021-02-21 21:16:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:09,974 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2021-02-21 21:16:09,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:09,974 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2021-02-21 21:16:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-21 21:16:09,976 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:09,976 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] [2021-02-21 21:16:09,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:16:09,977 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:09,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1109717656, now seen corresponding path program 1 times [2021-02-21 21:16:09,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:09,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367716226] [2021-02-21 21:16:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:09,986 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:09,988 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:10,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:10,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:10,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-21 21:16:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:16:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:10,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367716226] [2021-02-21 21:16:10,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:10,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:16:10,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410873109] [2021-02-21 21:16:10,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:16:10,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:10,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:16:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:16:10,129 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand 7 states. [2021-02-21 21:16:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:10,515 INFO L93 Difference]: Finished difference Result 274 states and 303 transitions. [2021-02-21 21:16:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:16:10,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2021-02-21 21:16:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:10,519 INFO L225 Difference]: With dead ends: 274 [2021-02-21 21:16:10,519 INFO L226 Difference]: Without dead ends: 183 [2021-02-21 21:16:10,521 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 [2021-02-21 21:16:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-02-21 21:16:10,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2021-02-21 21:16:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-02-21 21:16:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2021-02-21 21:16:10,548 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 84 [2021-02-21 21:16:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:10,549 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2021-02-21 21:16:10,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:16:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2021-02-21 21:16:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-21 21:16:10,561 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:10,561 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] [2021-02-21 21:16:10,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:16:10,562 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:10,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1289285732, now seen corresponding path program 2 times [2021-02-21 21:16:10,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:10,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680704374] [2021-02-21 21:16:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:10,575 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:10,577 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:10,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-21 21:16:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 21:16:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:10,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:10,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:10,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680704374] [2021-02-21 21:16:10,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:10,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:16:10,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408283825] [2021-02-21 21:16:10,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:16:10,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:10,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:16:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:16:10,820 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand 6 states. [2021-02-21 21:16:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:11,167 INFO L93 Difference]: Finished difference Result 226 states and 249 transitions. [2021-02-21 21:16:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:16:11,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2021-02-21 21:16:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:11,169 INFO L225 Difference]: With dead ends: 226 [2021-02-21 21:16:11,169 INFO L226 Difference]: Without dead ends: 148 [2021-02-21 21:16:11,170 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 [2021-02-21 21:16:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-21 21:16:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-02-21 21:16:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-02-21 21:16:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2021-02-21 21:16:11,184 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 91 [2021-02-21 21:16:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:11,184 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2021-02-21 21:16:11,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:16:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2021-02-21 21:16:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-02-21 21:16:11,186 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:11,186 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] [2021-02-21 21:16:11,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:16:11,186 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash -658826803, now seen corresponding path program 1 times [2021-02-21 21:16:11,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:11,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968654052] [2021-02-21 21:16:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:11,194 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:11,196 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:11,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-21 21:16:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:11,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:11,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:11,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-21 21:16:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:11,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968654052] [2021-02-21 21:16:11,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:11,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:16:11,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377099755] [2021-02-21 21:16:11,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:16:11,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:16:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:16:11,348 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 8 states. [2021-02-21 21:16:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:11,744 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2021-02-21 21:16:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 21:16:11,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2021-02-21 21:16:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:11,746 INFO L225 Difference]: With dead ends: 192 [2021-02-21 21:16:11,746 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:16:11,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-02-21 21:16:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:16:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:16:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:16:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:16:11,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2021-02-21 21:16:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:11,749 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:16:11,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:16:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:16:11,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:16:11,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:16:11,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:16:12,700 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:16:12,700 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:16:12,700 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:16:12,700 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:16:12,701 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:16:12,701 INFO L192 CegarLoopUtils]: At program point elem_existsENTRY(lines 20 26) the Hoare annotation is: true [2021-02-21 21:16:12,701 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|)) [2021-02-21 21:16:12,701 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|)) [2021-02-21 21:16:12,701 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (= elem_exists_~size |elem_exists_#in~size|) [2021-02-21 21:16:12,702 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|)) [2021-02-21 21:16:12,702 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|)) [2021-02-21 21:16:12,702 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|)) [2021-02-21 21:16:12,702 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|)))) [2021-02-21 21:16:12,702 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|)))) [2021-02-21 21:16:12,703 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (= elem_exists_~size |elem_exists_#in~size|) [2021-02-21 21:16:12,703 INFO L192 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: true [2021-02-21 21:16:12,703 INFO L185 CegarLoopUtils]: At program point L20-1(lines 20 26) the Hoare annotation is: (= elem_exists_~size |elem_exists_#in~size|) [2021-02-21 21:16:12,703 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|)) [2021-02-21 21:16:12,703 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|)) [2021-02-21 21:16:12,703 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|)) [2021-02-21 21:16:12,704 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|)))) [2021-02-21 21:16:12,704 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|)) [2021-02-21 21:16:12,704 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:16:12,704 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:16:12,704 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:16:12,704 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:16:12,704 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:16:12,705 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:16:12,705 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|)) [2021-02-21 21:16:12,705 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:16:12,705 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:16:12,705 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-21 21:16:12,706 INFO L192 CegarLoopUtils]: At program point L16(lines 16 19) the Hoare annotation is: true [2021-02-21 21:16:12,706 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-21 21:16:12,706 INFO L192 CegarLoopUtils]: At program point insertENTRY(lines 16 19) the Hoare annotation is: true [2021-02-21 21:16:12,706 INFO L192 CegarLoopUtils]: At program point L16-1(lines 16 19) the Hoare annotation is: true [2021-02-21 21:16:12,706 INFO L192 CegarLoopUtils]: At program point insertFINAL(lines 16 19) the Hoare annotation is: true [2021-02-21 21:16:12,706 INFO L192 CegarLoopUtils]: At program point insertEXIT(lines 16 19) the Hoare annotation is: true [2021-02-21 21:16:12,706 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:16:12,707 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:16:12,707 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:16:12,707 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:16:12,707 INFO L185 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,707 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 27 67) the Hoare annotation is: true [2021-02-21 21:16:12,707 INFO L185 CegarLoopUtils]: At program point L52(line 52) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,707 INFO L185 CegarLoopUtils]: At program point L52-1(line 52) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,708 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)) [2021-02-21 21:16:12,708 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)) [2021-02-21 21:16:12,708 INFO L185 CegarLoopUtils]: At program point L52-4(line 52) the Hoare annotation is: false [2021-02-21 21:16:12,708 INFO L185 CegarLoopUtils]: At program point L52-5(line 52) the Hoare annotation is: false [2021-02-21 21:16:12,708 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)) [2021-02-21 21:16:12,708 INFO L185 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,708 INFO L185 CegarLoopUtils]: At program point L52-8(line 52) the Hoare annotation is: (and (= |main_#t~ret15| 0) (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,709 INFO L185 CegarLoopUtils]: At program point L52-9(lines 52 54) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,709 INFO L192 CegarLoopUtils]: At program point L44-1(line 44) the Hoare annotation is: true [2021-02-21 21:16:12,709 INFO L192 CegarLoopUtils]: At program point L44-2(line 44) the Hoare annotation is: true [2021-02-21 21:16:12,709 INFO L185 CegarLoopUtils]: At program point L61-2(lines 61 65) the Hoare annotation is: false [2021-02-21 21:16:12,709 INFO L185 CegarLoopUtils]: At program point L61-3(line 61) the Hoare annotation is: false [2021-02-21 21:16:12,709 INFO L185 CegarLoopUtils]: At program point L61-4(line 61) the Hoare annotation is: false [2021-02-21 21:16:12,709 INFO L185 CegarLoopUtils]: At program point L61-5(lines 61 65) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,710 INFO L192 CegarLoopUtils]: At program point L61-6(lines 61 65) the Hoare annotation is: true [2021-02-21 21:16:12,710 INFO L185 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: false [2021-02-21 21:16:12,710 INFO L185 CegarLoopUtils]: At program point L53-1(line 53) the Hoare annotation is: false [2021-02-21 21:16:12,710 INFO L185 CegarLoopUtils]: At program point L53-2(line 53) the Hoare annotation is: false [2021-02-21 21:16:12,710 INFO L185 CegarLoopUtils]: At program point L53-3(line 53) the Hoare annotation is: false [2021-02-21 21:16:12,710 INFO L185 CegarLoopUtils]: At program point L53-4(line 53) the Hoare annotation is: false [2021-02-21 21:16:12,710 INFO L185 CegarLoopUtils]: At program point L53-5(line 53) the Hoare annotation is: false [2021-02-21 21:16:12,710 INFO L185 CegarLoopUtils]: At program point L62(line 62) the Hoare annotation is: false [2021-02-21 21:16:12,711 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)) [2021-02-21 21:16:12,711 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= main_~n~0 0)) [2021-02-21 21:16:12,711 INFO L185 CegarLoopUtils]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2021-02-21 21:16:12,711 INFO L192 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: true [2021-02-21 21:16:12,711 INFO L185 CegarLoopUtils]: At program point L62-4(line 62) the Hoare annotation is: false [2021-02-21 21:16:12,711 INFO L192 CegarLoopUtils]: At program point L29-3(line 29) the Hoare annotation is: true [2021-02-21 21:16:12,711 INFO L185 CegarLoopUtils]: At program point L62-5(line 62) the Hoare annotation is: false [2021-02-21 21:16:12,712 INFO L185 CegarLoopUtils]: At program point L62-6(lines 62 64) the Hoare annotation is: false [2021-02-21 21:16:12,712 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 27 67) the Hoare annotation is: true [2021-02-21 21:16:12,712 INFO L185 CegarLoopUtils]: At program point L63(line 63) the Hoare annotation is: false [2021-02-21 21:16:12,712 INFO L185 CegarLoopUtils]: At program point L63-1(line 63) the Hoare annotation is: false [2021-02-21 21:16:12,712 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|)) [2021-02-21 21:16:12,712 INFO L185 CegarLoopUtils]: At program point L63-2(line 63) the Hoare annotation is: false [2021-02-21 21:16:12,712 INFO L185 CegarLoopUtils]: At program point L63-3(line 63) the Hoare annotation is: false [2021-02-21 21:16:12,713 INFO L185 CegarLoopUtils]: At program point L63-4(line 63) the Hoare annotation is: false [2021-02-21 21:16:12,713 INFO L185 CegarLoopUtils]: At program point L55-2(lines 55 59) the Hoare annotation is: false [2021-02-21 21:16:12,713 INFO L185 CegarLoopUtils]: At program point L55-3(line 55) the Hoare annotation is: false [2021-02-21 21:16:12,713 INFO L185 CegarLoopUtils]: At program point L55-4(line 55) the Hoare annotation is: false [2021-02-21 21:16:12,713 INFO L185 CegarLoopUtils]: At program point L55-5(lines 55 59) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,713 INFO L185 CegarLoopUtils]: At program point L47(line 47) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,713 INFO L185 CegarLoopUtils]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,714 INFO L185 CegarLoopUtils]: At program point L47-4(line 47) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,714 INFO L185 CegarLoopUtils]: At program point L47-5(line 47) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,714 INFO L185 CegarLoopUtils]: At program point L47-6(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,714 INFO L185 CegarLoopUtils]: At program point L47-7(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,714 INFO L185 CegarLoopUtils]: At program point L39-2(lines 39 43) the Hoare annotation is: false [2021-02-21 21:16:12,714 INFO L185 CegarLoopUtils]: At program point L39-3(line 39) the Hoare annotation is: false [2021-02-21 21:16:12,714 INFO L185 CegarLoopUtils]: At program point L39-4(line 39) the Hoare annotation is: false [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L39-5(lines 39 43) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L39-6(lines 39 43) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= main_~n~0 0)) [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L56(line 56) the Hoare annotation is: false [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L56-4(line 56) the Hoare annotation is: false [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L56-5(line 56) the Hoare annotation is: false [2021-02-21 21:16:12,715 INFO L185 CegarLoopUtils]: At program point L56-6(lines 56 58) the Hoare annotation is: false [2021-02-21 21:16:12,716 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: false [2021-02-21 21:16:12,716 INFO L185 CegarLoopUtils]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2021-02-21 21:16:12,716 INFO L185 CegarLoopUtils]: At program point L40-4(line 40) the Hoare annotation is: false [2021-02-21 21:16:12,716 INFO L185 CegarLoopUtils]: At program point L40-5(line 40) the Hoare annotation is: false [2021-02-21 21:16:12,716 INFO L185 CegarLoopUtils]: At program point L40-6(lines 40 42) the Hoare annotation is: false [2021-02-21 21:16:12,716 INFO L185 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: false [2021-02-21 21:16:12,716 INFO L185 CegarLoopUtils]: At program point L57-1(line 57) the Hoare annotation is: false [2021-02-21 21:16:12,717 INFO L185 CegarLoopUtils]: At program point L57-2(line 57) the Hoare annotation is: false [2021-02-21 21:16:12,717 INFO L185 CegarLoopUtils]: At program point L57-3(line 57) the Hoare annotation is: false [2021-02-21 21:16:12,717 INFO L185 CegarLoopUtils]: At program point L57-4(line 57) the Hoare annotation is: false [2021-02-21 21:16:12,717 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,717 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,717 INFO L185 CegarLoopUtils]: At program point L49-2(line 49) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,717 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: false [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: false [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L41-2(line 41) the Hoare annotation is: false [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L41-3(line 41) the Hoare annotation is: false [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L41-4(line 41) the Hoare annotation is: false [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= main_~n~0 0)) [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L33-3(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L33-4(line 33) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,718 INFO L185 CegarLoopUtils]: At program point L33-5(line 33) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,719 INFO L185 CegarLoopUtils]: At program point L33-6(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,719 INFO L185 CegarLoopUtils]: At program point L33-7(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,719 INFO L185 CegarLoopUtils]: At program point L51-2(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,719 INFO L185 CegarLoopUtils]: At program point L51-3(line 51) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,719 INFO L185 CegarLoopUtils]: At program point L51-4(line 51) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,719 INFO L185 CegarLoopUtils]: At program point L51-5(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,719 INFO L185 CegarLoopUtils]: At program point L51-6(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2021-02-21 21:16:12,720 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,720 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (= main_~n~0 0) [2021-02-21 21:16:12,720 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2021-02-21 21:16:12,720 INFO L192 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: true [2021-02-21 21:16:12,720 INFO L192 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: true [2021-02-21 21:16:12,720 INFO L192 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: true [2021-02-21 21:16:12,720 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(line 13) the Hoare annotation is: true [2021-02-21 21:16:12,720 INFO L192 CegarLoopUtils]: At program point L13-4(line 13) the Hoare annotation is: true [2021-02-21 21:16:12,721 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: true [2021-02-21 21:16:12,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:12 BoogieIcfgContainer [2021-02-21 21:16:12,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:12,747 INFO L168 Benchmark]: Toolchain (without parser) took 6931.44 ms. Allocated memory was 154.1 MB in the beginning and 225.4 MB in the end (delta: 71.3 MB). Free memory was 130.4 MB in the beginning and 129.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 124.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,747 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 128.1 MB in the end (delta: 120.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:12,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.64 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,749 INFO L168 Benchmark]: Boogie Preprocessor took 63.61 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 116.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,750 INFO L168 Benchmark]: RCFGBuilder took 786.14 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 118.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,751 INFO L168 Benchmark]: TraceAbstraction took 5785.75 ms. Allocated memory was 154.1 MB in the beginning and 225.4 MB in the end (delta: 71.3 MB). Free memory was 117.5 MB in the beginning and 129.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 111.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 128.1 MB in the end (delta: 120.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.64 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.61 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 116.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 786.14 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 118.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5785.75 ms. Allocated memory was 154.1 MB in the beginning and 225.4 MB in the end (delta: 71.3 MB). Free memory was 117.5 MB in the beginning and 129.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 111.4 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: 4.7s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 934 SDtfs, 755 SDslu, 1168 SDs, 0 SdLazy, 1516 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 238 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 137 LocationsWithAnnotation, 506 PreInvPairs, 576 NumberOfFragments, 498 HoareAnnotationTreeSize, 506 FomulaSimplifications, 1302 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 137 FomulaSimplificationsInter, 598 FormulaSimplificationTreeSizeReductionInter, 0.6s 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...