/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/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:22,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:22,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:22,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:47:22,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:47:22,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:47:22,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:47:22,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:47:22,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:47:22,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:47:22,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:47:22,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:47:22,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:22,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:22,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:22,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:22,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:22,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:23,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:23,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:23,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:23,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:23,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:23,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:23,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:47:23,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:23,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:23,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:23,047 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 04:47:23,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:23,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:23,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:23,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:23,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:23,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:23,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:23,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:23,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:23,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:23,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:23,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:23,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:23,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:23,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:23,082 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:23,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:23,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:23,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:23,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:23,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:23,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:23,084 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:23,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:23,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:23,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:23,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:23,523 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:23,524 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:23,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2021-02-24 04:47:23,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0867a88/d0d1e5be301d47d7a828a23cf0639a31/FLAGdf3b67e95 [2021-02-24 04:47:24,285 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:24,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2021-02-24 04:47:24,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0867a88/d0d1e5be301d47d7a828a23cf0639a31/FLAGdf3b67e95 [2021-02-24 04:47:24,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0867a88/d0d1e5be301d47d7a828a23cf0639a31 [2021-02-24 04:47:24,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:24,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:24,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:24,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:24,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:24,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:24,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201e2a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24, skipping insertion in model container [2021-02-24 04:47:24,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:24,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:24,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:24,868 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i[808,821] [2021-02-24 04:47:24,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:24,900 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:24,919 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i[808,821] [2021-02-24 04:47:24,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:24,945 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:24,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24 WrapperNode [2021-02-24 04:47:24,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:24,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:24,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:24,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:24,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:24,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:24,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:24,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:24,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:24,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:25,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (1/1) ... [2021-02-24 04:47:25,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:25,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:25,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:25,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:25,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (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 04:47:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:47:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:47:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:47:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:25,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:25,545 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:47:25,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:25 BoogieIcfgContainer [2021-02-24 04:47:25,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:25,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:25,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:25,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:25,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:24" (1/3) ... [2021-02-24 04:47:25,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb31ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:25, skipping insertion in model container [2021-02-24 04:47:25,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:24" (2/3) ... [2021-02-24 04:47:25,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb31ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:25, skipping insertion in model container [2021-02-24 04:47:25,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:25" (3/3) ... [2021-02-24 04:47:25,571 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2021-02-24 04:47:25,587 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:25,591 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:47:25,612 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:47:25,638 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:25,639 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:25,639 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:25,639 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:25,639 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:25,639 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:25,639 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:25,640 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-24 04:47:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-24 04:47:25,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:25,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:25,666 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2079068707, now seen corresponding path program 1 times [2021-02-24 04:47:25,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:25,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956698182] [2021-02-24 04:47:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:25,769 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:25,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:25,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:25,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:25,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:25,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:25,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:26,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:26,029 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 04:47:26,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956698182] [2021-02-24 04:47:26,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:26,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:47:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350498666] [2021-02-24 04:47:26,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:47:26,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:47:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:26,060 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2021-02-24 04:47:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:26,253 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2021-02-24 04:47:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:47:26,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-24 04:47:26,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:26,265 INFO L225 Difference]: With dead ends: 54 [2021-02-24 04:47:26,266 INFO L226 Difference]: Without dead ends: 30 [2021-02-24 04:47:26,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:47:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-24 04:47:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-02-24 04:47:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-24 04:47:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-02-24 04:47:26,346 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2021-02-24 04:47:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:26,347 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-02-24 04:47:26,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:47:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-02-24 04:47:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-24 04:47:26,349 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:26,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:26,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:26,349 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:26,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1153641451, now seen corresponding path program 1 times [2021-02-24 04:47:26,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:26,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273949057] [2021-02-24 04:47:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:26,394 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:26,430 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:26,442 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:26,450 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:26,461 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:26,481 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:26,497 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:26,501 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:26,502 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:47:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:26,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:26,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:26,595 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 04:47:26,596 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 04:47:26,606 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:26,607 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:26,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:26,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:26,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:26,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:26,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:26,699 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 04:47:26,706 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.7 percent of original size [2021-02-24 04:47:26,712 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.7 percent of original size 38 [2021-02-24 04:47:26,773 WARN L141 QuantifierPusher]: treesize reduction 3, result has 82.4 percent of original size [2021-02-24 04:47:26,777 WARN L147 QuantifierPusher]: treesize reduction 3, result has 82.4 percent of original size 14 [2021-02-24 04:47:26,780 WARN L141 QuantifierPusher]: treesize reduction 3, result has 82.4 percent of original size [2021-02-24 04:47:26,782 WARN L147 QuantifierPusher]: treesize reduction 3, result has 82.4 percent of original size 14 [2021-02-24 04:47:26,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:47:26,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:47:26,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:47:26,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:26,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:26,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:26,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273949057] [2021-02-24 04:47:26,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:26,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 04:47:26,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104972978] [2021-02-24 04:47:26,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 04:47:26,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:26,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 04:47:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:47:26,928 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 12 states. [2021-02-24 04:47:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:27,449 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-02-24 04:47:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:47:27,449 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2021-02-24 04:47:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:27,451 INFO L225 Difference]: With dead ends: 41 [2021-02-24 04:47:27,451 INFO L226 Difference]: Without dead ends: 36 [2021-02-24 04:47:27,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:47:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-24 04:47:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-02-24 04:47:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-24 04:47:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-02-24 04:47:27,467 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 25 [2021-02-24 04:47:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:27,468 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-02-24 04:47:27,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 04:47:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-02-24 04:47:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-24 04:47:27,469 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:27,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:27,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:47:27,470 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:27,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1814353283, now seen corresponding path program 1 times [2021-02-24 04:47:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:27,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058600063] [2021-02-24 04:47:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:27,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:27,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:27,496 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:27,502 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:27,507 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:27,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:27,518 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:27,521 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:27,524 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:27,526 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:27,528 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:27,530 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:27,532 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:27,536 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:27,539 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:27,542 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:27,545 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:27,546 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:27,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:27,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:27,561 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:27,564 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:27,567 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:27,570 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:27,571 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:27,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:27,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:27,643 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 04:47:27,644 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 04:47:27,662 WARN L141 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-02-24 04:47:27,663 WARN L147 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size 7 [2021-02-24 04:47:27,677 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:27,680 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:27,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:27,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:27,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:27,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:27,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:27,786 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 04:47:27,793 WARN L141 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-02-24 04:47:27,795 WARN L147 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size 19 [2021-02-24 04:47:27,799 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size [2021-02-24 04:47:27,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:27,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:47:27,811 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size 39 [2021-02-24 04:47:27,830 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:27,832 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:27,835 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:27,839 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:27,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:27,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:27,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:27,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:27,916 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:27,917 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:27,918 WARN L141 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size [2021-02-24 04:47:27,918 WARN L147 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size 1 [2021-02-24 04:47:27,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:27,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:27,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058600063] [2021-02-24 04:47:27,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:27,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 04:47:27,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661691996] [2021-02-24 04:47:27,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 04:47:27,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 04:47:27,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:47:27,930 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2021-02-24 04:47:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:28,273 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-02-24 04:47:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 04:47:28,274 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2021-02-24 04:47:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:28,275 INFO L225 Difference]: With dead ends: 51 [2021-02-24 04:47:28,275 INFO L226 Difference]: Without dead ends: 40 [2021-02-24 04:47:28,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:47:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-24 04:47:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-02-24 04:47:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-24 04:47:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-02-24 04:47:28,289 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 30 [2021-02-24 04:47:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:28,289 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-02-24 04:47:28,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 04:47:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-02-24 04:47:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:47:28,291 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:28,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:28,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:47:28,291 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:28,292 INFO L82 PathProgramCache]: Analyzing trace with hash -177447861, now seen corresponding path program 2 times [2021-02-24 04:47:28,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:28,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680685057] [2021-02-24 04:47:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:28,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:28,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:28,315 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:28,317 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:28,319 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:28,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:28,325 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:28,328 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:28,335 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:28,338 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:28,343 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:28,345 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:28,347 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:28,356 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:28,360 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:28,364 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:28,367 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:28,367 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:28,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:28,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:28,384 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:28,387 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:28,400 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:28,407 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:28,409 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:28,411 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:28,415 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:28,420 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:28,423 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:28,428 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:28,434 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:28,441 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:28,445 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:28,446 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:28,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:28,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:28,544 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 04:47:28,545 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 04:47:28,557 WARN L141 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-02-24 04:47:28,558 WARN L147 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size 7 [2021-02-24 04:47:28,571 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:28,572 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:28,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:28,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:28,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:28,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:28,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:28,655 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 04:47:28,658 WARN L141 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-02-24 04:47:28,661 WARN L147 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size 19 [2021-02-24 04:47:28,664 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size [2021-02-24 04:47:28,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:28,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:47:28,673 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size 39 [2021-02-24 04:47:28,698 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:28,699 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:28,700 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:28,701 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:28,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:28,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:28,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:28,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:28,785 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:28,786 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:28,799 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:28,799 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:28,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:28,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:28,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:28,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:28,900 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:28,903 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:28,922 WARN L141 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size [2021-02-24 04:47:28,923 WARN L147 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size 1 [2021-02-24 04:47:28,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:28,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:28,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680685057] [2021-02-24 04:47:28,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:28,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 04:47:28,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105248858] [2021-02-24 04:47:28,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 04:47:28,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:28,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 04:47:28,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:47:28,928 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 15 states. [2021-02-24 04:47:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:29,545 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-02-24 04:47:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:47:29,546 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2021-02-24 04:47:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:29,547 INFO L225 Difference]: With dead ends: 57 [2021-02-24 04:47:29,548 INFO L226 Difference]: Without dead ends: 46 [2021-02-24 04:47:29,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:47:29,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-24 04:47:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-02-24 04:47:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-24 04:47:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-02-24 04:47:29,562 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 36 [2021-02-24 04:47:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:29,563 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-02-24 04:47:29,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 04:47:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-02-24 04:47:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 04:47:29,564 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:29,564 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:29,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:47:29,565 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:29,566 INFO L82 PathProgramCache]: Analyzing trace with hash 72723731, now seen corresponding path program 3 times [2021-02-24 04:47:29,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:29,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072464854] [2021-02-24 04:47:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:29,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:29,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:29,587 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:29,589 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:29,590 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:29,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:29,596 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:29,599 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:29,601 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:29,602 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:29,604 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:29,606 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:29,608 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:29,611 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:29,613 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:29,616 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:29,618 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:29,618 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:29,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:29,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:29,635 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:29,637 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:29,640 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:29,642 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:29,643 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:29,644 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:29,646 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:29,648 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:29,649 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:29,652 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:29,654 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:29,657 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:29,659 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:29,659 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:29,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:29,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:29,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:29,696 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,697 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:29,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:29,734 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 04:47:29,735 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:47:29,737 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:47:29,739 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.9 percent of original size [2021-02-24 04:47:29,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:29,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:47:29,744 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.9 percent of original size 35 [2021-02-24 04:47:29,757 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,758 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,759 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,759 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:29,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:29,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:29,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:29,796 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,796 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,797 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,798 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:29,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:29,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:29,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:29,842 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,843 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,853 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,854 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:29,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:29,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:29,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:29,915 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:29,916 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:29,917 WARN L141 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-02-24 04:47:29,917 WARN L147 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size 3 [2021-02-24 04:47:29,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:29,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:29,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:29,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:29,965 WARN L141 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-02-24 04:47:29,966 WARN L147 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size 1 [2021-02-24 04:47:29,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072464854] [2021-02-24 04:47:29,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:29,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 04:47:29,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561569603] [2021-02-24 04:47:29,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 04:47:29,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:29,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 04:47:29,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:47:29,969 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 16 states. [2021-02-24 04:47:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:30,659 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2021-02-24 04:47:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 04:47:30,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2021-02-24 04:47:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:30,663 INFO L225 Difference]: With dead ends: 69 [2021-02-24 04:47:30,664 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 04:47:30,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2021-02-24 04:47:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 04:47:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-24 04:47:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 04:47:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-02-24 04:47:30,682 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 42 [2021-02-24 04:47:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:30,682 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-02-24 04:47:30,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 04:47:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-02-24 04:47:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 04:47:30,684 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:30,684 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:30,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:47:30,684 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:30,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1514269509, now seen corresponding path program 4 times [2021-02-24 04:47:30,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:30,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215062877] [2021-02-24 04:47:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:30,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:30,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:30,707 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:30,709 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:30,710 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:30,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:30,716 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:30,719 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:30,720 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:30,723 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:30,726 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:30,728 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:30,730 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:30,733 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:30,736 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:30,738 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:30,740 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:30,741 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:30,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:30,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:30,755 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:30,757 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:30,759 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:30,761 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:30,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:30,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:30,774 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:30,776 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:30,777 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:30,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:30,782 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:30,784 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:30,786 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:30,786 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:30,787 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:30,789 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:30,790 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:30,792 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:30,795 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:30,796 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:30,799 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:30,800 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:30,801 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:30,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:30,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:30,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:30,834 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:30,834 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:30,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:30,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:30,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:30,876 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 04:47:30,878 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:47:30,879 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:47:30,881 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.9 percent of original size [2021-02-24 04:47:30,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:30,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:47:30,886 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.9 percent of original size 35 [2021-02-24 04:47:30,910 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:30,911 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:30,912 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:30,913 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:30,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:30,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:30,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:30,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:30,947 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:30,947 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:30,948 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:30,948 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:30,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:30,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:30,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:30,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:30,991 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:30,991 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:30,992 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:30,992 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:30,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:30,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:30,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:31,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:31,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:31,040 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:31,041 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:31,042 WARN L141 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-02-24 04:47:31,042 WARN L147 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size 3 [2021-02-24 04:47:31,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:31,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:31,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:31,089 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:31,090 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:31,090 WARN L141 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-02-24 04:47:31,092 WARN L147 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size 3 [2021-02-24 04:47:31,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:31,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:31,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:31,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:31,150 WARN L141 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-02-24 04:47:31,151 WARN L147 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size 1 [2021-02-24 04:47:31,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215062877] [2021-02-24 04:47:31,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:31,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-24 04:47:31,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864324799] [2021-02-24 04:47:31,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 04:47:31,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:31,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 04:47:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:47:31,154 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 19 states. [2021-02-24 04:47:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:32,037 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-02-24 04:47:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 04:47:32,038 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2021-02-24 04:47:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:32,039 INFO L225 Difference]: With dead ends: 68 [2021-02-24 04:47:32,040 INFO L226 Difference]: Without dead ends: 57 [2021-02-24 04:47:32,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2021-02-24 04:47:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-24 04:47:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-02-24 04:47:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-24 04:47:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2021-02-24 04:47:32,056 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 47 [2021-02-24 04:47:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:32,057 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2021-02-24 04:47:32,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 04:47:32,057 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2021-02-24 04:47:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 04:47:32,059 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:32,059 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:32,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:47:32,060 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:32,060 INFO L82 PathProgramCache]: Analyzing trace with hash -107037613, now seen corresponding path program 5 times [2021-02-24 04:47:32,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:32,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055485401] [2021-02-24 04:47:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:32,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,082 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:32,083 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:32,085 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:32,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:32,090 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:32,092 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:32,093 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:32,094 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:32,096 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:32,097 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:32,099 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:32,102 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:32,103 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:32,105 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:32,107 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:32,108 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:32,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:32,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:32,120 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:32,121 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:32,123 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:32,125 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:32,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,135 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:32,136 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:32,138 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:32,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:32,142 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:32,144 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:32,146 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:32,146 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:32,147 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:32,149 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:32,150 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:32,151 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:32,154 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:32,156 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:32,158 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:32,159 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:32,160 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:32,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:32,184 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-24 04:47:32,185 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-24 04:47:32,189 WARN L141 QuantifierPusher]: treesize reduction 10, result has 23.1 percent of original size [2021-02-24 04:47:32,189 WARN L147 QuantifierPusher]: treesize reduction 10, result has 23.1 percent of original size 3 [2021-02-24 04:47:32,194 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,194 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:32,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:32,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:32,230 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 04:47:32,231 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:47:32,232 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:47:32,234 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.9 percent of original size [2021-02-24 04:47:32,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:32,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:47:32,238 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.9 percent of original size 35 [2021-02-24 04:47:32,249 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,250 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,250 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,251 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:32,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,285 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,287 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,288 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,291 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:32,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,333 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,334 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,345 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,345 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:32,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,419 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,419 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,431 WARN L141 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-02-24 04:47:32,432 WARN L147 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size 3 [2021-02-24 04:47:32,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:32,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,491 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,492 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,492 WARN L141 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-02-24 04:47:32,493 WARN L147 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size 3 [2021-02-24 04:47:32,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:32,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,548 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:47:32,549 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:47:32,562 WARN L141 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-02-24 04:47:32,563 WARN L147 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size 3 [2021-02-24 04:47:32,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:32,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:32,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:32,639 WARN L141 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-02-24 04:47:32,639 WARN L147 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size 1 [2021-02-24 04:47:32,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055485401] [2021-02-24 04:47:32,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:32,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-24 04:47:32,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734162502] [2021-02-24 04:47:32,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-24 04:47:32,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:32,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-24 04:47:32,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-02-24 04:47:32,642 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 22 states. [2021-02-24 04:47:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:33,743 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-02-24 04:47:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 04:47:33,744 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2021-02-24 04:47:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:33,745 INFO L225 Difference]: With dead ends: 73 [2021-02-24 04:47:33,745 INFO L226 Difference]: Without dead ends: 62 [2021-02-24 04:47:33,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2021-02-24 04:47:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-24 04:47:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-02-24 04:47:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 04:47:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-02-24 04:47:33,777 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 52 [2021-02-24 04:47:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:33,779 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-02-24 04:47:33,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-24 04:47:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-02-24 04:47:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 04:47:33,783 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:33,784 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:33,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 04:47:33,784 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:33,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1350591493, now seen corresponding path program 6 times [2021-02-24 04:47:33,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:33,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832383506] [2021-02-24 04:47:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:33,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:33,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:33,811 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:33,812 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:33,813 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:33,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:33,819 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:33,821 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:33,823 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:33,824 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:33,827 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:33,828 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:33,830 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:33,847 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:33,848 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:33,850 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:33,851 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:33,852 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:33,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:33,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:33,863 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:33,864 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:33,866 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:33,867 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:33,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:33,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:33,877 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:33,878 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:33,879 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:33,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:33,884 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:33,886 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:33,887 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:33,888 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:33,888 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:33,890 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:33,891 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:33,893 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:33,895 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:33,897 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:33,898 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:33,900 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:33,900 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:33,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:33,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:33,931 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 04:47:33,932 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 04:47:33,939 WARN L141 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-02-24 04:47:33,940 WARN L147 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size 7 [2021-02-24 04:47:33,948 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:33,949 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:33,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:33,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:33,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:33,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:33,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:34,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:34,003 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 04:47:34,004 WARN L141 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size [2021-02-24 04:47:34,006 WARN L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-02-24 04:47:34,007 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size [2021-02-24 04:47:34,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:34,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:47:34,011 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size 39 [2021-02-24 04:47:34,029 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,029 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,030 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,030 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:34,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:34,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,093 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,093 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,096 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,097 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:34,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:34,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,177 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,178 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,178 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,179 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:34,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:34,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,278 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,279 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,303 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:34,303 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:34,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:34,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:34,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,412 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,414 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,431 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:34,433 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:34,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:34,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:34,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,544 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,544 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,567 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:34,569 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:34,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:34,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:34,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,701 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:34,702 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:34,702 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:34,703 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:34,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:34,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:34,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:34,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:34,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:34,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832383506] [2021-02-24 04:47:34,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:34,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-02-24 04:47:34,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128988515] [2021-02-24 04:47:34,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-24 04:47:34,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:34,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-24 04:47:34,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 04:47:34,807 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 31 states. [2021-02-24 04:47:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:36,639 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-02-24 04:47:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-24 04:47:36,640 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2021-02-24 04:47:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:36,641 INFO L225 Difference]: With dead ends: 78 [2021-02-24 04:47:36,641 INFO L226 Difference]: Without dead ends: 67 [2021-02-24 04:47:36,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=246, Invalid=3176, Unknown=0, NotChecked=0, Total=3422 [2021-02-24 04:47:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-24 04:47:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2021-02-24 04:47:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-24 04:47:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-02-24 04:47:36,658 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 57 [2021-02-24 04:47:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:36,658 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-02-24 04:47:36,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-24 04:47:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-02-24 04:47:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 04:47:36,660 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:36,660 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:36,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 04:47:36,660 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:36,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1196276627, now seen corresponding path program 7 times [2021-02-24 04:47:36,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:36,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825191992] [2021-02-24 04:47:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:36,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:36,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:36,681 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:36,682 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:36,683 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:36,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:36,687 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:36,689 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:36,690 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:36,691 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:36,693 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:36,694 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:36,696 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:36,698 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:36,700 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:36,701 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:36,703 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:36,703 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:36,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:36,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:36,714 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:36,715 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:36,717 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:36,718 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:36,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:36,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:36,727 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:47:36,729 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:47:36,730 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:36,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:47:36,734 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:47:36,736 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:47:36,737 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:47:36,738 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:36,738 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:36,740 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:36,741 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:47:36,742 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:47:36,745 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:47:36,746 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:47:36,748 WARN L141 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-02-24 04:47:36,750 WARN L147 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size 34 [2021-02-24 04:47:36,750 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:47:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:36,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:36,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:36,777 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 04:47:36,778 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 04:47:36,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:36,793 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:36,794 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:36,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:36,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:36,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:36,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:36,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:36,847 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 04:47:36,848 WARN L141 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-02-24 04:47:36,849 WARN L147 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size 19 [2021-02-24 04:47:36,850 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size [2021-02-24 04:47:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:47:36,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:47:36,854 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size 39 [2021-02-24 04:47:36,870 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:36,871 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:36,871 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:36,872 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:36,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:36,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:36,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:36,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:36,937 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:36,938 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:36,949 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:36,950 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:36,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:36,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:36,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:37,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:37,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,058 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:37,058 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:37,059 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:37,059 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:37,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:37,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:37,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,153 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:37,153 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:37,173 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:37,173 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:37,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:37,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:37,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,261 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:37,262 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:37,277 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:37,277 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:37,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:37,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:37,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,371 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:37,372 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:37,373 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:37,373 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:37,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:37,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:37,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,467 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:37,468 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:37,469 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:37,470 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:37,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:37,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:37,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,576 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:47:37,577 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:47:37,605 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:47:37,606 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:47:37,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:47:37,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:47:37,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:47:37,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:37,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:37,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825191992] [2021-02-24 04:47:37,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:37,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-02-24 04:47:37,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202695264] [2021-02-24 04:47:37,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-24 04:47:37,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-24 04:47:37,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2021-02-24 04:47:37,759 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 34 states. [2021-02-24 04:47:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:39,703 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-02-24 04:47:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-24 04:47:39,703 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 62 [2021-02-24 04:47:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:39,704 INFO L225 Difference]: With dead ends: 69 [2021-02-24 04:47:39,704 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:47:39,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=270, Invalid=3890, Unknown=0, NotChecked=0, Total=4160 [2021-02-24 04:47:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:47:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:47:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:47:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:47:39,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-02-24 04:47:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:39,707 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:47:39,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-02-24 04:47:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:47:39,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:47:39,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 04:47:39,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:47:40,245 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2021-02-24 04:47:40,526 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2021-02-24 04:47:40,810 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-02-24 04:47:41,059 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2021-02-24 04:47:41,241 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2021-02-24 04:47:41,357 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 04:47:41,357 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 04:47:41,357 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 04:47:41,357 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 04:47:41,358 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 04:47:41,358 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:41,358 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:41,358 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 04:47:41,358 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 04:47:41,358 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 04:47:41,358 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 04:47:41,358 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 04:47:41,359 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 04:47:41,359 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:41,359 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:41,359 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:41,359 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:47:41,359 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:47:41,359 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2021-02-24 04:47:41,359 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (= (* main_~i~0 2) (+ main_~sn~0 2)))) (or (and (= main_~sn~0 0) .cse0) (and (<= 2 main_~i~0) .cse0 (< main_~i~0 4)))) [2021-02-24 04:47:41,360 INFO L185 CegarLoopUtils]: At program point L25(lines 25 26) the Hoare annotation is: (let ((.cse0 (= 6 main_~sn~0))) (or (and (= main_~i~0 8) .cse0) (and (= main_~i~0 4) .cse0) (and (= main_~sn~0 4) (= main_~i~0 3)) (and (= 7 main_~i~0) .cse0) (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (= (* main_~i~0 2) (+ main_~sn~0 2)) (= main_~i~0 1)) (and (= 5 main_~i~0) .cse0) (and (= main_~i~0 6) .cse0))) [2021-02-24 04:47:41,360 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 22 29) the Hoare annotation is: true [2021-02-24 04:47:41,360 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (= main_~sn~0 0) [2021-02-24 04:47:41,360 INFO L192 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-02-24 04:47:41,360 INFO L185 CegarLoopUtils]: At program point L24-3(lines 24 27) the Hoare annotation is: (let ((.cse0 (= 6 main_~sn~0))) (or (and (= main_~i~0 8) .cse0) (and (= main_~i~0 4) .cse0) (and (= 7 main_~i~0) .cse0) (and (= main_~i~0 1) (= 2 main_~sn~0)) (and (= main_~sn~0 4) (= main_~i~0 2)) (and .cse0 (= main_~i~0 3)) (and (= main_~i~0 6) .cse0) (and (= 5 main_~i~0) .cse0))) [2021-02-24 04:47:41,360 INFO L185 CegarLoopUtils]: At program point L24-4(line 24) the Hoare annotation is: (let ((.cse0 (= |main_#t~post3| main_~i~0)) (.cse1 (= 6 main_~sn~0))) (or (and (= main_~sn~0 4) (= main_~i~0 2) .cse0) (and .cse0 .cse1 (= main_~i~0 3)) (and .cse0 (= main_~i~0 8) .cse1) (and .cse0 (= main_~i~0 1) (= 2 main_~sn~0)) (and .cse0 (= 5 main_~i~0) .cse1) (and .cse0 (= main_~i~0 6) .cse1) (and (= 7 main_~i~0) .cse0 .cse1) (and (= main_~i~0 4) .cse0 .cse1))) [2021-02-24 04:47:41,361 INFO L185 CegarLoopUtils]: At program point L24-5(line 24) the Hoare annotation is: (let ((.cse0 (= (+ |main_#t~post3| 1) main_~i~0)) (.cse1 (= 6 main_~sn~0))) (or (and .cse0 (= 2 main_~sn~0) (= |main_#t~post3| 1)) (and (= (* |main_#t~post3| 2) main_~sn~0) .cse0 .cse1) (and (= |main_#t~post3| 6) .cse0 .cse1) (and .cse0 (= |main_#t~post3| 7) .cse1) (and .cse0 (= |main_#t~post3| 4) .cse1) (and .cse0 (= |main_#t~post3| 8) .cse1) (and (= main_~sn~0 4) (= |main_#t~post3| 2) .cse0) (and .cse0 (= |main_#t~post3| 5) .cse1))) [2021-02-24 04:47:41,361 INFO L185 CegarLoopUtils]: At program point L24-6(lines 24 27) the Hoare annotation is: (let ((.cse0 (= 6 main_~sn~0))) (or (and (= main_~i~0 8) .cse0) (and .cse0 (= main_~i~0 9)) (and (= main_~i~0 4) .cse0) (and (= main_~sn~0 4) (= main_~i~0 3)) (and (= 7 main_~i~0) .cse0) (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (= (* main_~i~0 2) (+ main_~sn~0 2)) (= main_~i~0 1)) (and (= 5 main_~i~0) .cse0) (and (= main_~i~0 6) .cse0))) [2021-02-24 04:47:41,361 INFO L185 CegarLoopUtils]: At program point L24-7(lines 24 27) the Hoare annotation is: false [2021-02-24 04:47:41,361 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 22 29) the Hoare annotation is: true [2021-02-24 04:47:41,361 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-24 04:47:41,361 INFO L192 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: true [2021-02-24 04:47:41,361 INFO L192 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: true [2021-02-24 04:47:41,362 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-02-24 04:47:41,362 INFO L192 CegarLoopUtils]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2021-02-24 04:47:41,362 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: true [2021-02-24 04:47:41,362 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: true [2021-02-24 04:47:41,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:47:41 BoogieIcfgContainer [2021-02-24 04:47:41,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:47:41,385 INFO L168 Benchmark]: Toolchain (without parser) took 16740.46 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 127.8 MB in the beginning and 77.4 MB in the end (delta: 50.4 MB). Peak memory consumption was 124.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:41,385 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:47:41,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.92 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:41,385 INFO L168 Benchmark]: Boogie Preprocessor took 55.26 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:41,385 INFO L168 Benchmark]: RCFGBuilder took 544.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 133.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:41,386 INFO L168 Benchmark]: TraceAbstraction took 15827.78 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 133.2 MB in the beginning and 77.4 MB in the end (delta: 55.8 MB). Peak memory consumption was 128.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:41,386 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 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.92 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.26 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 544.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 133.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15827.78 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 133.2 MB in the beginning and 77.4 MB in the end (delta: 55.8 MB). Peak memory consumption was 128.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((i == 8 && 6 == sn) || (6 == sn && i == 9)) || (i == 4 && 6 == sn)) || (sn == 4 && i == 3)) || (7 == i && 6 == sn)) || (i == 2 && 2 == sn)) || (i * 2 == sn + 2 && i == 1)) || (5 == i && 6 == sn)) || (i == 6 && 6 == sn) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.0s, OverallIterations: 9, TraceHistogramMax: 8, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 372 SDslu, 1180 SDs, 0 SdLazy, 3912 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 432 GetRequests, 117 SyntacticMatches, 26 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3838 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 88 PreInvPairs, 152 NumberOfFragments, 444 HoareAnnotationTreeSize, 88 FomulaSimplifications, 15106 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 32 FomulaSimplificationsInter, 1690 FormulaSimplificationTreeSizeReductionInter, 1.3s 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...