/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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:29:55,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:29:55,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:29:55,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:29:55,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:29:55,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:29:55,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:29:55,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:29:55,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:29:55,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:29:55,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:29:55,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:29:55,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:29:55,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:29:55,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:29:55,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:29:55,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:29:55,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:29:55,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:29:55,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:29:55,281 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 21:29:55,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:29:55,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:29:55,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:29:55,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:29:55,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:29:55,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:29:55,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:29:55,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:29:55,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:29:55,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:29:55,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:29:55,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:29:55,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:29:55,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:29:55,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:29:55,325 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:29:55,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:29:55,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:29:55,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:29:55,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:29:55,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:29:55,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:29:55,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:29:55,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:29:55,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:29:55,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:29:55,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:29:55,875 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:29:55,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-02-21 21:29:55,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49dccfd4b/03ba6487bf774026ae8121d66791ff2b/FLAG01b98f9e5 [2021-02-21 21:29:56,864 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:29:56,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-02-21 21:29:56,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49dccfd4b/03ba6487bf774026ae8121d66791ff2b/FLAG01b98f9e5 [2021-02-21 21:29:57,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49dccfd4b/03ba6487bf774026ae8121d66791ff2b [2021-02-21 21:29:57,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:29:57,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:29:57,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:57,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:29:57,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:29:57,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f770c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57, skipping insertion in model container [2021-02-21 21:29:57,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:29:57,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:29:57,589 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+cfa-reducer.c[7920,7933] [2021-02-21 21:29:57,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:57,633 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:29:57,706 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+cfa-reducer.c[7920,7933] [2021-02-21 21:29:57,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:57,746 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:29:57,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57 WrapperNode [2021-02-21 21:29:57,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:57,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:29:57,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:29:57,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:29:57,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (1/1) ... [2021-02-21 21:29:57,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:29:57,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:29:57,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:29:57,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:29:57,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (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 21:29:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:29:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:29:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:29:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:29:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-02-21 21:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-02-21 21:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:29:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:29:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:29:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 21:29:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:29:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:29:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:29:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:29:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 21:29:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:29:59,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:29:59,199 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 21:29:59,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:59 BoogieIcfgContainer [2021-02-21 21:29:59,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:29:59,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:29:59,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:29:59,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:29:59,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:29:57" (1/3) ... [2021-02-21 21:29:59,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7e4b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:59, skipping insertion in model container [2021-02-21 21:29:59,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:57" (2/3) ... [2021-02-21 21:29:59,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7e4b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:59, skipping insertion in model container [2021-02-21 21:29:59,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:59" (3/3) ... [2021-02-21 21:29:59,215 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-02-21 21:29:59,223 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:29:59,231 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:29:59,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:29:59,288 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:29:59,289 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:29:59,289 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:29:59,289 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:29:59,289 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:29:59,289 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:29:59,290 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:29:59,290 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:29:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2021-02-21 21:29:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-21 21:29:59,347 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:59,349 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 21:29:59,350 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:59,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1953402615, now seen corresponding path program 1 times [2021-02-21 21:29:59,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:59,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832850262] [2021-02-21 21:29:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:59,466 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:00,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:00,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:00,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:00,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:00,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:00,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:00,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:00,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:00,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:00,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:30:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:00,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:00,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:00,575 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 21:30:00,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832850262] [2021-02-21 21:30:00,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:30:00,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:30:00,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074752453] [2021-02-21 21:30:00,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:30:00,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:30:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:30:00,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:30:00,610 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 6 states. [2021-02-21 21:30:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:30:01,558 INFO L93 Difference]: Finished difference Result 391 states and 398 transitions. [2021-02-21 21:30:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:30:01,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 322 [2021-02-21 21:30:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:30:01,583 INFO L225 Difference]: With dead ends: 391 [2021-02-21 21:30:01,583 INFO L226 Difference]: Without dead ends: 354 [2021-02-21 21:30:01,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:30:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-02-21 21:30:01,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 335. [2021-02-21 21:30:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2021-02-21 21:30:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2021-02-21 21:30:01,707 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 322 [2021-02-21 21:30:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:30:01,715 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2021-02-21 21:30:01,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:30:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2021-02-21 21:30:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-21 21:30:01,737 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:30:01,737 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 21:30:01,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:30:01,739 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:30:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:30:01,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1577928009, now seen corresponding path program 1 times [2021-02-21 21:30:01,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:30:01,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346196382] [2021-02-21 21:30:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:30:01,764 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:30:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:02,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:02,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:02,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:02,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:02,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:02,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:02,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:02,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:30:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:02,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:02,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:02,352 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 21:30:02,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346196382] [2021-02-21 21:30:02,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:30:02,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:30:02,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197567840] [2021-02-21 21:30:02,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:30:02,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:30:02,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:30:02,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:30:02,364 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 5 states. [2021-02-21 21:30:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:30:03,211 INFO L93 Difference]: Finished difference Result 379 states and 382 transitions. [2021-02-21 21:30:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:30:03,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2021-02-21 21:30:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:30:03,224 INFO L225 Difference]: With dead ends: 379 [2021-02-21 21:30:03,224 INFO L226 Difference]: Without dead ends: 354 [2021-02-21 21:30:03,227 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 21:30:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-02-21 21:30:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 340. [2021-02-21 21:30:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2021-02-21 21:30:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 341 transitions. [2021-02-21 21:30:03,299 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 341 transitions. Word has length 322 [2021-02-21 21:30:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:30:03,304 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 341 transitions. [2021-02-21 21:30:03,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:30:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 341 transitions. [2021-02-21 21:30:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-02-21 21:30:03,319 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:30:03,320 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-02-21 21:30:03,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:30:03,320 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:30:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:30:03,321 INFO L82 PathProgramCache]: Analyzing trace with hash -971732799, now seen corresponding path program 1 times [2021-02-21 21:30:03,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:30:03,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916025874] [2021-02-21 21:30:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:30:04,889 WARN L202 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 134 DAG size of output: 120 [2021-02-21 21:30:04,922 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:30:04,927 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:30:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:05,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:05,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:30:05,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:30:05,206 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-21 21:30:05,209 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-21 21:30:05,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:30:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:30:05,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:30:05,522 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 21:30:05,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916025874] [2021-02-21 21:30:05,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:30:05,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:30:05,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722975358] [2021-02-21 21:30:05,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:30:05,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:30:05,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:30:05,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:30:05,528 INFO L87 Difference]: Start difference. First operand 340 states and 341 transitions. Second operand 6 states. [2021-02-21 21:30:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:30:06,699 INFO L93 Difference]: Finished difference Result 396 states and 399 transitions. [2021-02-21 21:30:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:30:06,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2021-02-21 21:30:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:30:06,704 INFO L225 Difference]: With dead ends: 396 [2021-02-21 21:30:06,705 INFO L226 Difference]: Without dead ends: 371 [2021-02-21 21:30:06,708 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 21:30:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-02-21 21:30:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 357. [2021-02-21 21:30:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2021-02-21 21:30:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2021-02-21 21:30:06,790 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 339 [2021-02-21 21:30:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:30:06,791 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2021-02-21 21:30:06,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:30:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2021-02-21 21:30:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-02-21 21:30:06,800 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:30:06,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-21 21:30:06,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:30:06,801 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:30:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:30:06,802 INFO L82 PathProgramCache]: Analyzing trace with hash -545414071, now seen corresponding path program 2 times [2021-02-21 21:30:06,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:30:06,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126340762] [2021-02-21 21:30:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:30:08,542 WARN L202 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 134 DAG size of output: 115