/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:13:23,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:13:23,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:13:23,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:13:23,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:13:23,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:13:23,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:13:23,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:13:23,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:13:23,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:13:23,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:13:23,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:13:23,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:13:23,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:13:23,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:13:23,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:13:23,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:13:23,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:13:23,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:13:23,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:13:23,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:13:23,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:13:23,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:13:23,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:13:23,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:13:23,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:13:23,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:13:23,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:13:23,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:13:23,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:13:23,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:13:23,335 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:13:23,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:13:23,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:13:23,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:13:23,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:13:23,336 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:13:23,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:13:23,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:13:23,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:13:23,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:13:23,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:13:23,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:13:23,338 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:13:23,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:13:23,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:13:23,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:13:23,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:13:23,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:13:23,805 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:13:23,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2021-02-24 04:13:23,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28847622f/eedc9f87e2664669a5bdf129ae435fd5/FLAGe5cda5c17 [2021-02-24 04:13:24,528 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:13:24,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2021-02-24 04:13:24,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28847622f/eedc9f87e2664669a5bdf129ae435fd5/FLAGe5cda5c17 [2021-02-24 04:13:24,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28847622f/eedc9f87e2664669a5bdf129ae435fd5 [2021-02-24 04:13:24,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:13:24,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:13:24,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:13:24,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:13:24,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:13:24,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:13:24" (1/1) ... [2021-02-24 04:13:24,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a62e32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:24, skipping insertion in model container [2021-02-24 04:13:24,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:13:24" (1/1) ... [2021-02-24 04:13:24,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:13:24,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:13:25,111 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c[454,467] [2021-02-24 04:13:25,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:13:25,127 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:13:25,145 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c[454,467] [2021-02-24 04:13:25,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:13:25,164 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:13:25,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25 WrapperNode [2021-02-24 04:13:25,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:13:25,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:13:25,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:13:25,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:13:25,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (1/1) ... [2021-02-24 04:13:25,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (1/1) ... [2021-02-24 04:13:25,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (1/1) ... [2021-02-24 04:13:25,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (1/1) ... [2021-02-24 04:13:25,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (1/1) ... [2021-02-24 04:13:25,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (1/1) ... [2021-02-24 04:13:25,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (1/1) ... [2021-02-24 04:13:25,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:13:25,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:13:25,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:13:25,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:13:25,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (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 [2021-02-24 04:13:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:13:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:13:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:13:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-24 04:13:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:13:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:13:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:13:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:13:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:13:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:13:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-24 04:13:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:13:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:13:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:13:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:13:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:13:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:13:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:13:25,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:13:25,825 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:13:25,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:13:25 BoogieIcfgContainer [2021-02-24 04:13:25,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:13:25,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:13:25,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:13:25,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:13:25,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:13:24" (1/3) ... [2021-02-24 04:13:25,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf4242c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:13:25, skipping insertion in model container [2021-02-24 04:13:25,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:25" (2/3) ... [2021-02-24 04:13:25,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf4242c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:13:25, skipping insertion in model container [2021-02-24 04:13:25,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:13:25" (3/3) ... [2021-02-24 04:13:25,842 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2021-02-24 04:13:25,850 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:13:25,856 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:13:25,878 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:13:25,917 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:13:25,918 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:13:25,918 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:13:25,918 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:13:25,918 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:13:25,918 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:13:25,919 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:13:25,919 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:13:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-24 04:13:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 04:13:25,955 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:25,957 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] [2021-02-24 04:13:25,957 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:25,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash -777358502, now seen corresponding path program 1 times [2021-02-24 04:13:25,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:25,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207600414] [2021-02-24 04:13:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:26,125 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:26,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:26,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:26,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:26,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:26,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:26,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:26,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:26,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:26,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:26,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:26,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:26,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:26,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:13:26,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207600414] [2021-02-24 04:13:26,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:26,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:13:26,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940530062] [2021-02-24 04:13:26,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:13:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:26,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:13:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:13:26,696 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-24 04:13:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:27,148 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-02-24 04:13:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:13:27,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-24 04:13:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:27,161 INFO L225 Difference]: With dead ends: 46 [2021-02-24 04:13:27,162 INFO L226 Difference]: Without dead ends: 31 [2021-02-24 04:13:27,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:13:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-24 04:13:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-24 04:13:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-24 04:13:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-02-24 04:13:27,226 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-02-24 04:13:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:27,226 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-02-24 04:13:27,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:13:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-02-24 04:13:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-24 04:13:27,229 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:27,229 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 04:13:27,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:13:27,230 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash 814440848, now seen corresponding path program 1 times [2021-02-24 04:13:27,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:27,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953313445] [2021-02-24 04:13:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:27,234 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:27,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:27,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:27,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:27,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:27,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:27,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:27,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:27,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:27,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 04:13:27,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953313445] [2021-02-24 04:13:27,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:27,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:13:27,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578198057] [2021-02-24 04:13:27,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:13:27,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:27,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:13:27,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:13:27,425 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-02-24 04:13:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:27,834 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-24 04:13:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:13:27,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-24 04:13:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:27,840 INFO L225 Difference]: With dead ends: 42 [2021-02-24 04:13:27,840 INFO L226 Difference]: Without dead ends: 36 [2021-02-24 04:13:27,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:13:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-24 04:13:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-24 04:13:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-24 04:13:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-02-24 04:13:27,885 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-02-24 04:13:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:27,886 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-02-24 04:13:27,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:13:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-02-24 04:13:27,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 04:13:27,888 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:27,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-02-24 04:13:27,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:13:27,889 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:27,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:27,890 INFO L82 PathProgramCache]: Analyzing trace with hash -545888486, now seen corresponding path program 2 times [2021-02-24 04:13:27,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:27,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697906395] [2021-02-24 04:13:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:27,896 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:27,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:27,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:27,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-24 04:13:28,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697906395] [2021-02-24 04:13:28,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:28,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:13:28,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788223726] [2021-02-24 04:13:28,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:13:28,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:13:28,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:13:28,265 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2021-02-24 04:13:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:28,618 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-24 04:13:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:13:28,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-02-24 04:13:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:28,621 INFO L225 Difference]: With dead ends: 47 [2021-02-24 04:13:28,621 INFO L226 Difference]: Without dead ends: 41 [2021-02-24 04:13:28,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:13:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-24 04:13:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-24 04:13:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-24 04:13:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-24 04:13:28,638 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2021-02-24 04:13:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:28,638 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-24 04:13:28,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:13:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-24 04:13:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 04:13:28,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:28,641 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:28,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:13:28,641 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1925368272, now seen corresponding path program 3 times [2021-02-24 04:13:28,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:28,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262501461] [2021-02-24 04:13:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:28,645 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:28,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:28,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:28,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:28,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-24 04:13:28,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262501461] [2021-02-24 04:13:28,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:28,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:13:28,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093424600] [2021-02-24 04:13:28,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:13:28,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:28,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:13:28,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:13:28,871 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 9 states. [2021-02-24 04:13:29,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:29,239 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-02-24 04:13:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 04:13:29,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-24 04:13:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:29,241 INFO L225 Difference]: With dead ends: 52 [2021-02-24 04:13:29,241 INFO L226 Difference]: Without dead ends: 46 [2021-02-24 04:13:29,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:13:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-24 04:13:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-24 04:13:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-24 04:13:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-24 04:13:29,257 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 48 [2021-02-24 04:13:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:29,258 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-24 04:13:29,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:13:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-24 04:13:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-24 04:13:29,260 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:29,260 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:29,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:13:29,261 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:29,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1702046426, now seen corresponding path program 4 times [2021-02-24 04:13:29,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:29,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270221017] [2021-02-24 04:13:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:29,264 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:29,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-24 04:13:29,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270221017] [2021-02-24 04:13:29,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:29,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 04:13:29,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801188070] [2021-02-24 04:13:29,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 04:13:29,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:29,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 04:13:29,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-24 04:13:29,473 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2021-02-24 04:13:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:29,861 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-02-24 04:13:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:13:29,862 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-24 04:13:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:29,866 INFO L225 Difference]: With dead ends: 57 [2021-02-24 04:13:29,867 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 04:13:29,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:13:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 04:13:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-24 04:13:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-24 04:13:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-02-24 04:13:29,896 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 56 [2021-02-24 04:13:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:29,898 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-02-24 04:13:29,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 04:13:29,899 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-02-24 04:13:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 04:13:29,905 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:29,906 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:29,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:13:29,907 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:29,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1874632176, now seen corresponding path program 5 times [2021-02-24 04:13:29,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:29,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040381162] [2021-02-24 04:13:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:29,912 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:29,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:29,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:29,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:29,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:30,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:30,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 04:13:30,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040381162] [2021-02-24 04:13:30,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:30,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 04:13:30,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129661740] [2021-02-24 04:13:30,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 04:13:30,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:30,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 04:13:30,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:13:30,215 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2021-02-24 04:13:30,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:30,630 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-02-24 04:13:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:13:30,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-02-24 04:13:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:30,632 INFO L225 Difference]: With dead ends: 62 [2021-02-24 04:13:30,633 INFO L226 Difference]: Without dead ends: 56 [2021-02-24 04:13:30,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:13:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-24 04:13:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-24 04:13:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 04:13:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-02-24 04:13:30,648 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 64 [2021-02-24 04:13:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:30,648 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-02-24 04:13:30,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 04:13:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-02-24 04:13:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-24 04:13:30,650 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:30,650 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:30,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:13:30,651 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:30,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1809628826, now seen corresponding path program 6 times [2021-02-24 04:13:30,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:30,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504937101] [2021-02-24 04:13:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:30,654 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:30,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:30,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:30,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-24 04:13:30,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504937101] [2021-02-24 04:13:30,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:30,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 04:13:30,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247692449] [2021-02-24 04:13:30,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 04:13:30,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:30,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 04:13:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-02-24 04:13:30,919 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2021-02-24 04:13:31,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:31,356 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-24 04:13:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 04:13:31,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2021-02-24 04:13:31,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:31,358 INFO L225 Difference]: With dead ends: 67 [2021-02-24 04:13:31,358 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 04:13:31,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:13:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 04:13:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-24 04:13:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-24 04:13:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-02-24 04:13:31,378 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 72 [2021-02-24 04:13:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:31,378 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-02-24 04:13:31,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 04:13:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-02-24 04:13:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-24 04:13:31,380 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:31,380 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:31,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:13:31,381 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1448159824, now seen corresponding path program 7 times [2021-02-24 04:13:31,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:31,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110854148] [2021-02-24 04:13:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:31,384 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:31,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:31,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:31,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-24 04:13:31,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110854148] [2021-02-24 04:13:31,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:31,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:13:31,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884848557] [2021-02-24 04:13:31,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:13:31,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:31,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:13:31,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:13:31,754 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2021-02-24 04:13:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:32,213 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-02-24 04:13:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:13:32,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-24 04:13:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:32,217 INFO L225 Difference]: With dead ends: 72 [2021-02-24 04:13:32,217 INFO L226 Difference]: Without dead ends: 66 [2021-02-24 04:13:32,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:13:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-24 04:13:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-02-24 04:13:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 04:13:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-02-24 04:13:32,251 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 80 [2021-02-24 04:13:32,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:32,253 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-02-24 04:13:32,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:13:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-02-24 04:13:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-24 04:13:32,256 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:32,256 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:32,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:13:32,256 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:32,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:32,257 INFO L82 PathProgramCache]: Analyzing trace with hash -537976230, now seen corresponding path program 8 times [2021-02-24 04:13:32,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:32,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209396343] [2021-02-24 04:13:32,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:32,260 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:32,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:32,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:32,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-02-24 04:13:32,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209396343] [2021-02-24 04:13:32,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:32,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:13:32,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318714776] [2021-02-24 04:13:32,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:13:32,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:32,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:13:32,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:13:32,706 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 14 states. [2021-02-24 04:13:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:33,212 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-02-24 04:13:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 04:13:33,212 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2021-02-24 04:13:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:33,215 INFO L225 Difference]: With dead ends: 77 [2021-02-24 04:13:33,215 INFO L226 Difference]: Without dead ends: 71 [2021-02-24 04:13:33,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:13:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-24 04:13:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-02-24 04:13:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-24 04:13:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-02-24 04:13:33,241 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 88 [2021-02-24 04:13:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:33,241 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-02-24 04:13:33,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:13:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-02-24 04:13:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-24 04:13:33,243 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:33,243 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:33,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:13:33,243 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash -852483440, now seen corresponding path program 9 times [2021-02-24 04:13:33,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:33,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793014051] [2021-02-24 04:13:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:33,246 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:33,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:33,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:33,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:33,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-24 04:13:33,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793014051] [2021-02-24 04:13:33,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:33,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 04:13:33,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644034857] [2021-02-24 04:13:33,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 04:13:33,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:33,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 04:13:33,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:13:33,612 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 15 states. [2021-02-24 04:13:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:34,154 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-02-24 04:13:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 04:13:34,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2021-02-24 04:13:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:34,156 INFO L225 Difference]: With dead ends: 82 [2021-02-24 04:13:34,156 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 04:13:34,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:13:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 04:13:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-24 04:13:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 04:13:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-02-24 04:13:34,171 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 96 [2021-02-24 04:13:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:34,171 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-02-24 04:13:34,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 04:13:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-02-24 04:13:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-24 04:13:34,172 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:34,172 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:34,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:13:34,173 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:34,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1407604250, now seen corresponding path program 10 times [2021-02-24 04:13:34,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:34,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130207596] [2021-02-24 04:13:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:34,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,234 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-24 04:13:34,235 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-24 04:13:34,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:34,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:13:34,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:34,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:34,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:34,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-02-24 04:13:35,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130207596] [2021-02-24 04:13:35,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:35,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-24 04:13:35,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263147215] [2021-02-24 04:13:35,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 04:13:35,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:35,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 04:13:35,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2021-02-24 04:13:35,086 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 26 states. [2021-02-24 04:13:37,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:37,810 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-02-24 04:13:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-24 04:13:37,810 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 104 [2021-02-24 04:13:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:37,812 INFO L225 Difference]: With dead ends: 87 [2021-02-24 04:13:37,812 INFO L226 Difference]: Without dead ends: 81 [2021-02-24 04:13:37,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2021-02-24 04:13:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-24 04:13:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-24 04:13:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 04:13:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-02-24 04:13:37,836 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 104 [2021-02-24 04:13:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:37,836 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-02-24 04:13:37,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 04:13:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-02-24 04:13:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-02-24 04:13:37,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:37,839 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:37,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:13:37,839 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2015644368, now seen corresponding path program 11 times [2021-02-24 04:13:37,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:37,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454972252] [2021-02-24 04:13:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:37,843 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:37,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:37,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:37,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:37,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:37,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:37,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:37,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:37,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:37,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:37,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:37,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:38,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:38,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-24 04:13:38,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454972252] [2021-02-24 04:13:38,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:38,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:13:38,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070844511] [2021-02-24 04:13:38,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:13:38,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:38,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:13:38,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:13:38,360 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 17 states. [2021-02-24 04:13:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:39,289 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2021-02-24 04:13:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 04:13:39,290 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2021-02-24 04:13:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:39,291 INFO L225 Difference]: With dead ends: 81 [2021-02-24 04:13:39,291 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:13:39,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2021-02-24 04:13:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:13:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:13:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:13:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:13:39,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2021-02-24 04:13:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:39,293 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:13:39,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:13:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:13:39,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:13:39,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:13:39,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:13:40,419 WARN L202 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-02-24 04:13:41,082 WARN L202 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-02-24 04:13:41,622 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-02-24 04:13:42,021 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-02-24 04:13:42,538 WARN L202 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2021-02-24 04:13:42,544 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-24 04:13:42,544 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-24 04:13:42,544 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-24 04:13:42,544 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-24 04:13:42,544 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-24 04:13:42,544 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:13:42,545 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:13:42,545 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-24 04:13:42,545 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 04:13:42,545 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-24 04:13:42,545 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-24 04:13:42,545 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-24 04:13:42,545 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:13:42,546 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:13:42,546 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:13:42,546 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:13:42,546 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:13:42,546 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2021-02-24 04:13:42,546 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2021-02-24 04:13:42,546 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 11 17) the Hoare annotation is: (<= 10 main_~input~0) [2021-02-24 04:13:42,546 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: false [2021-02-24 04:13:42,547 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (and (< 9 main_~result~0) (<= main_~result~0 10) (<= 10 main_~input~0)) [2021-02-24 04:13:42,547 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: false [2021-02-24 04:13:42,547 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= 10 main_~input~0) (<= main_~input~0 10)) [2021-02-24 04:13:42,547 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 10) (<= 10 |main_#t~ret8|) (<= 10 main_~input~0)) [2021-02-24 04:13:42,547 INFO L185 CegarLoopUtils]: At program point L14-2(lines 11 17) the Hoare annotation is: (<= 10 main_~input~0) [2021-02-24 04:13:42,547 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 10) (<= 10 |main_#t~ret8|) (<= 10 main_~input~0)) [2021-02-24 04:13:42,547 INFO L185 CegarLoopUtils]: At program point L13-3(line 13) the Hoare annotation is: (and (< 9 main_~result~0) (<= |main_#t~ret8| 10) (<= main_~result~0 10) (<= 10 |main_#t~ret8|) (<= 10 main_~input~0)) [2021-02-24 04:13:42,548 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 6 9) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= |id_#in~x| 9)) (and .cse0 (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 11 |id_#in~x|) .cse0))) (or (and (<= 7 |id_#res|) (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= |id_#res| 8) (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and (<= 9 |id_#res|) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (and (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 4) (<= 4 |id_#res|) (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (= |id_#res| 0) (= |id_#in~x| 0)) (<= 10 |id_#in~x|) (and (<= |id_#res| 6) (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= |id_#res| 5)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)))) [2021-02-24 04:13:42,548 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 6 9) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= |id_#in~x| 9)) (and .cse0 (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 11 |id_#in~x|) .cse0))) (or (and (<= 7 |id_#res|) (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= |id_#res| 8) (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and (<= 9 |id_#res|) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (and (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 4) (<= 4 |id_#res|) (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (= |id_#res| 0) (= |id_#in~x| 0)) (<= 10 |id_#in~x|) (and (<= |id_#res| 6) (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= |id_#res| 5)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)))) [2021-02-24 04:13:42,548 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-24 04:13:42,548 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2021-02-24 04:13:42,548 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-24 04:13:42,549 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) .cse0 (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and .cse0 (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= 11 |id_#in~x|) .cse0))) [2021-02-24 04:13:42,549 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2021-02-24 04:13:42,549 INFO L185 CegarLoopUtils]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) .cse0 (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and .cse0 (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= 11 |id_#in~x|) .cse0))) [2021-02-24 04:13:42,550 INFO L185 CegarLoopUtils]: At program point L8-3(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (= |id_#t~ret7| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and .cse0 (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 8 |id_#res|) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 2 |id_#res|) .cse0 (<= |id_#t~ret7| 1) (<= |id_#res| 2) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 5 |id_#t~ret7|) (<= |id_#res| 6) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 11 |id_#in~x|) .cse0))) [2021-02-24 04:13:42,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:13:42 BoogieIcfgContainer [2021-02-24 04:13:42,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:13:42,572 INFO L168 Benchmark]: Toolchain (without parser) took 17655.20 ms. Allocated memory was 167.8 MB in the beginning and 376.4 MB in the end (delta: 208.7 MB). Free memory was 144.6 MB in the beginning and 327.6 MB in the end (delta: -183.0 MB). Peak memory consumption was 224.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:13:42,573 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory was 142.4 MB in the beginning and 142.2 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:13:42,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.90 ms. Allocated memory is still 167.8 MB. Free memory was 143.3 MB in the beginning and 133.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:13:42,573 INFO L168 Benchmark]: Boogie Preprocessor took 36.22 ms. Allocated memory is still 167.8 MB. Free memory was 133.8 MB in the beginning and 132.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:13:42,573 INFO L168 Benchmark]: RCFGBuilder took 626.01 ms. Allocated memory is still 167.8 MB. Free memory was 132.4 MB in the beginning and 119.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:13:42,574 INFO L168 Benchmark]: TraceAbstraction took 16740.48 ms. Allocated memory was 167.8 MB in the beginning and 376.4 MB in the end (delta: 208.7 MB). Free memory was 118.4 MB in the beginning and 327.6 MB in the end (delta: -209.2 MB). Peak memory consumption was 198.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:13:42,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory was 142.4 MB in the beginning and 142.2 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.90 ms. Allocated memory is still 167.8 MB. Free memory was 143.3 MB in the beginning and 133.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.22 ms. Allocated memory is still 167.8 MB. Free memory was 133.8 MB in the beginning and 132.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 626.01 ms. Allocated memory is still 167.8 MB. Free memory was 132.4 MB in the beginning and 119.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16740.48 ms. Allocated memory was 167.8 MB in the beginning and 376.4 MB in the end (delta: 208.7 MB). Free memory was 118.4 MB in the beginning and 327.6 MB in the end (delta: -209.2 MB). Peak memory consumption was 198.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 10 <= input - ProcedureContractResult [Line: 6]: Procedure Contract for id Derived contract for procedure id: (((\old(x) == x && \old(x) <= 9) || ((\old(x) == x && 10 <= \result) && \result <= 10)) || (11 <= \old(x) && \old(x) == x)) && (((((((((((((7 <= \result && \result <= 7) && 7 <= \old(x)) && \old(x) <= 7) || (((\result <= 3 && 3 <= \old(x)) && \old(x) <= 3) && 3 <= \result)) || (((\result <= 8 && 8 <= \old(x)) && 8 <= \result) && \old(x) <= 8)) || ((9 <= \result && \result <= 9) && 9 <= \old(x))) || (((2 <= \result && \result <= 2) && 2 <= \old(x)) && \old(x) <= 2)) || (((\result <= 4 && 4 <= \result) && \old(x) <= 4) && 4 <= \old(x))) || (\result == 0 && \old(x) == 0)) || 10 <= \old(x)) || (((\result <= 6 && 6 <= \old(x)) && 6 <= \result) && \old(x) <= 6)) || (((5 <= \result && 5 <= \old(x)) && \old(x) <= 5) && \result <= 5)) || (((1 <= \old(x) && \result <= 1) && 1 <= \result) && \old(x) <= 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.3s, OverallIterations: 12, TraceHistogramMax: 12, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 369 SDtfs, 741 SDslu, 928 SDs, 0 SdLazy, 2489 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=11, 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, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 43 PreInvPairs, 252 NumberOfFragments, 969 HoareAnnotationTreeSize, 43 FomulaSimplifications, 4396 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 34 FomulaSimplificationsInter, 4262 FormulaSimplificationTreeSizeReductionInter, 2.7s 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...