/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:29:59,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:30:00,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:30:00,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:30:00,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:30:00,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:30:00,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:30:00,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:30:00,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:30:00,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:30:00,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:30:00,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:30:00,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:30:00,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:30:00,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:30:00,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:30:00,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:30:00,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:30:00,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:30:00,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:30:00,173 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 21:30:00,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:30:00,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:30:00,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:30:00,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:30:00,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:30:00,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:30:00,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:30:00,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:30:00,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:30:00,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:30:00,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:30:00,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:30:00,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:30:00,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:30:00,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:30:00,228 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:30:00,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:30:00,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:30:00,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:30:00,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:30:00,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:30:00,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:30:00,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:30:00,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:30:00,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:30:00,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:30:00,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:30:00,874 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:30:00,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-02-21 21:30:01,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb22bb21/c52121b25632407b92d81d41aeda30f6/FLAG50cd408ae [2021-02-21 21:30:02,039 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:30:02,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-02-21 21:30:02,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb22bb21/c52121b25632407b92d81d41aeda30f6/FLAG50cd408ae [2021-02-21 21:30:02,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb22bb21/c52121b25632407b92d81d41aeda30f6 [2021-02-21 21:30:02,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:30:02,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:30:02,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:30:02,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:30:02,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:30:02,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6d042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02, skipping insertion in model container [2021-02-21 21:30:02,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:30:02,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:30:02,443 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-02-21 21:30:02,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:30:02,471 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:30:02,601 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-02-21 21:30:02,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:30:02,640 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:30:02,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02 WrapperNode [2021-02-21 21:30:02,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:30:02,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:30:02,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:30:02,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:30:02,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (1/1) ... [2021-02-21 21:30:02,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:30:02,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:30:02,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:30:02,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:30:02,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (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 21:30:02,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:30:02,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:30:02,948 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:30:02,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:30:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:30:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:30:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:30:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:30:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-02-21 21:30:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-02-21 21:30:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:30:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:30:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:30:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 21:30:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:30:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:30:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:30:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:30:02,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:30:02,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 21:30:04,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:30:04,858 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 21:30:04,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:30:04 BoogieIcfgContainer [2021-02-21 21:30:04,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:30:04,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:30:04,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:30:04,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:30:04,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:30:02" (1/3) ... [2021-02-21 21:30:04,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4d257c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:30:04, skipping insertion in model container [2021-02-21 21:30:04,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:30:02" (2/3) ... [2021-02-21 21:30:04,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4d257c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:30:04, skipping insertion in model container [2021-02-21 21:30:04,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:30:04" (3/3) ... [2021-02-21 21:30:04,877 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-02-21 21:30:04,887 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:30:04,896 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:30:04,923 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:30:04,959 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:30:04,960 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:30:04,960 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:30:04,960 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:30:04,960 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:30:04,960 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:30:04,960 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:30:04,961 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:30:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states. [2021-02-21 21:30:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-21 21:30:05,023 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:30:05,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:05,026 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:30:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:30:05,036 INFO L82 PathProgramCache]: Analyzing trace with hash 46424617, now seen corresponding path program 1 times [2021-02-21 21:30:05,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:30:05,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307390775] [2021-02-21 21:30:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:30:05,163 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:30:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:05,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:05,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:05,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:05,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:06,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:06,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:30:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:06,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:06,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:06,507 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 21:30:06,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307390775] [2021-02-21 21:30:06,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:30:06,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:30:06,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835712625] [2021-02-21 21:30:06,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:30:06,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:30:06,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:30:06,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:30:06,581 INFO L87 Difference]: Start difference. First operand 368 states. Second operand 5 states. [2021-02-21 21:30:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:30:08,097 INFO L93 Difference]: Finished difference Result 421 states and 429 transitions. [2021-02-21 21:30:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:30:08,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2021-02-21 21:30:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:30:08,151 INFO L225 Difference]: With dead ends: 421 [2021-02-21 21:30:08,152 INFO L226 Difference]: Without dead ends: 354 [2021-02-21 21:30:08,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:30:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-02-21 21:30:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 340. [2021-02-21 21:30:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2021-02-21 21:30:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2021-02-21 21:30:08,324 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 322 [2021-02-21 21:30:08,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:30:08,326 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2021-02-21 21:30:08,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:30:08,327 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2021-02-21 21:30:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-02-21 21:30:08,337 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:30:08,337 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:08,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:30:08,338 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:30:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:30:08,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1363534718, now seen corresponding path program 1 times [2021-02-21 21:30:08,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:30:08,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674077133] [2021-02-21 21:30:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:30:10,196 WARN L202 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 134 DAG size of output: 115 [2021-02-21 21:30:10,229 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:30:10,241 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:30:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:10,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:10,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:10,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:10,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:10,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:10,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:30:10,617 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-21 21:30:10,619 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-21 21:30:10,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:10,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:30:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:10,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:10,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:10,972 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 21:30:10,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674077133] [2021-02-21 21:30:10,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:30:10,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:30:10,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202928830] [2021-02-21 21:30:10,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:30:10,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:30:10,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:30:10,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:30:10,988 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 6 states. [2021-02-21 21:30:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:30:12,337 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2021-02-21 21:30:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:30:12,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2021-02-21 21:30:12,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:30:12,343 INFO L225 Difference]: With dead ends: 379 [2021-02-21 21:30:12,344 INFO L226 Difference]: Without dead ends: 371 [2021-02-21 21:30:12,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:30:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-02-21 21:30:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 357. [2021-02-21 21:30:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2021-02-21 21:30:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2021-02-21 21:30:12,402 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 339 [2021-02-21 21:30:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:30:12,403 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2021-02-21 21:30:12,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:30:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2021-02-21 21:30:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-02-21 21:30:12,412 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:30:12,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:12,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:30:12,414 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:30:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:30:12,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2085000905, now seen corresponding path program 2 times [2021-02-21 21:30:12,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:30:12,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406679303] [2021-02-21 21:30:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY