/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/loop-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:55,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:55,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:56,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:47:56,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:56,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:56,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:56,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:56,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:56,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:56,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:56,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:56,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:56,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:56,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:56,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:56,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:47:56,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:56,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:56,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:56,126 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 04:47:56,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:56,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:56,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:56,158 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:56,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:56,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:56,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:56,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:56,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:56,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:56,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:56,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:56,161 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:56,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:56,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:56,162 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:56,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:56,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:56,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:56,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:56,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:56,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:56,164 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:56,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:56,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:56,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:56,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:56,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:56,594 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:56,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2021-02-24 04:47:56,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81a0a9226/f2faabdbada7402f90b7a2f8192b2819/FLAG5cc36caa2 [2021-02-24 04:47:57,369 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:57,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2021-02-24 04:47:57,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81a0a9226/f2faabdbada7402f90b7a2f8192b2819/FLAG5cc36caa2 [2021-02-24 04:47:57,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81a0a9226/f2faabdbada7402f90b7a2f8192b2819 [2021-02-24 04:47:57,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:57,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:57,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:57,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:57,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:57,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:57,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5d3cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57, skipping insertion in model container [2021-02-24 04:47:57,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:57,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:57,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:57,936 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c[327,340] [2021-02-24 04:47:57,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:57,962 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:57,977 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c[327,340] [2021-02-24 04:47:57,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:57,998 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:57,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57 WrapperNode [2021-02-24 04:47:57,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:58,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:58,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:58,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:58,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:58,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:58,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:58,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:58,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:58,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:58,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:58,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:58,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:58,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:58,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:58,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:47:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:58,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:58,576 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:47:58,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:58 BoogieIcfgContainer [2021-02-24 04:47:58,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:58,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:58,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:58,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:58,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:57" (1/3) ... [2021-02-24 04:47:58,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a9e4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:58, skipping insertion in model container [2021-02-24 04:47:58,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57" (2/3) ... [2021-02-24 04:47:58,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a9e4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:58, skipping insertion in model container [2021-02-24 04:47:58,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:58" (3/3) ... [2021-02-24 04:47:58,595 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2021-02-24 04:47:58,637 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:58,651 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:47:58,708 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:47:58,749 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:58,750 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:58,750 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:58,750 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:58,752 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:58,752 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:58,753 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:58,753 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-24 04:47:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-24 04:47:58,793 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:58,794 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 04:47:58,795 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash 645207053, now seen corresponding path program 1 times [2021-02-24 04:47:58,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:58,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357742659] [2021-02-24 04:47:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:58,908 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:59,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:59,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:59,217 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 04:47:59,221 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-24 04:47:59,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:59,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:59,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:59,366 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 04:47:59,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357742659] [2021-02-24 04:47:59,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:59,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:47:59,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653508453] [2021-02-24 04:47:59,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:47:59,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:59,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:47:59,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:59,396 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2021-02-24 04:47:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:59,637 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-02-24 04:47:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:47:59,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-24 04:47:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:59,649 INFO L225 Difference]: With dead ends: 45 [2021-02-24 04:47:59,650 INFO L226 Difference]: Without dead ends: 27 [2021-02-24 04:47:59,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 04:47:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-24 04:47:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-02-24 04:47:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-24 04:47:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-02-24 04:47:59,702 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2021-02-24 04:47:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:59,702 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-02-24 04:47:59,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:47:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-02-24 04:47:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 04:47:59,704 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:59,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:59,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:59,705 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:59,706 INFO L82 PathProgramCache]: Analyzing trace with hash -567626551, now seen corresponding path program 1 times [2021-02-24 04:47:59,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:59,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29300875] [2021-02-24 04:47:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:59,946 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-02-24 04:47:59,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:47:59,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:00,006 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:48:00,023 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:00,029 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:00,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:48:00,042 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:48:00,048 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:48:00,051 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:48:00,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:00,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:00,071 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:48:00,074 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:00,076 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:00,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:48:00,085 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:48:00,089 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:48:00,092 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:48:00,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:48:00,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:48:00,111 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:48:00,113 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:00,116 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:00,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:48:00,124 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:48:00,128 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:48:00,131 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:48:00,132 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:48:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:00,255 WARN L141 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-02-24 04:48:00,256 WARN L147 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size 13 [2021-02-24 04:48:00,262 WARN L141 QuantifierPusher]: treesize reduction 21, result has 25.0 percent of original size [2021-02-24 04:48:00,263 WARN L147 QuantifierPusher]: treesize reduction 21, result has 25.0 percent of original size 7 [2021-02-24 04:48:00,274 WARN L141 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-02-24 04:48:00,276 WARN L147 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size 32 [2021-02-24 04:48:00,343 WARN L141 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size [2021-02-24 04:48:00,346 WARN L147 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size 39 [2021-02-24 04:48:00,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:00,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:00,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,533 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 04:48:00,542 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:48:00,545 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:48:00,548 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-24 04:48:00,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:00,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:48:00,559 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-24 04:48:00,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:48:00,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:48:00,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:48:00,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:48:00,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:48:00,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29300875] [2021-02-24 04:48:00,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:00,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 04:48:00,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469617504] [2021-02-24 04:48:00,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 04:48:00,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:00,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 04:48:00,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:48:00,690 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 11 states. [2021-02-24 04:48:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:01,073 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-02-24 04:48:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:48:01,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2021-02-24 04:48:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:01,076 INFO L225 Difference]: With dead ends: 37 [2021-02-24 04:48:01,076 INFO L226 Difference]: Without dead ends: 32 [2021-02-24 04:48:01,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:48:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-24 04:48:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-02-24 04:48:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-24 04:48:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-02-24 04:48:01,089 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 24 [2021-02-24 04:48:01,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:01,089 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-02-24 04:48:01,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 04:48:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-02-24 04:48:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-24 04:48:01,091 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:01,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:48:01,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:48:01,092 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:01,092 INFO L82 PathProgramCache]: Analyzing trace with hash -137877107, now seen corresponding path program 2 times [2021-02-24 04:48:01,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:01,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89940045] [2021-02-24 04:48:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:01,204 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-02-24 04:48:01,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,322 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:48:01,324 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:01,328 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:01,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:48:01,335 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:48:01,338 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:48:01,340 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:48:01,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:48:01,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:48:01,356 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:48:01,358 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:01,360 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:01,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:48:01,367 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:48:01,370 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:48:01,372 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:48:01,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,388 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:48:01,389 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:01,391 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:01,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:48:01,398 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:48:01,401 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-24 04:48:01,404 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-24 04:48:01,404 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:48:01,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,419 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:48:01,420 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:01,423 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:01,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:48:01,429 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:48:01,432 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:48:01,435 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:48:01,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:48:01,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:48:01,450 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:48:01,451 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:01,453 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:01,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:48:01,460 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:48:01,462 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:48:01,464 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:48:01,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,480 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:48:01,482 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:01,484 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:01,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:48:01,490 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:48:01,493 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:48:01,495 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:48:01,496 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:48:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:01,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:01,642 WARN L141 QuantifierPusher]: treesize reduction 25, result has 21.9 percent of original size [2021-02-24 04:48:01,644 WARN L147 QuantifierPusher]: treesize reduction 25, result has 21.9 percent of original size 7 [2021-02-24 04:48:01,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:48:01,657 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-02-24 04:48:01,658 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size 32 [2021-02-24 04:48:01,687 WARN L141 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size [2021-02-24 04:48:01,689 WARN L147 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size 39 [2021-02-24 04:48:01,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:01,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:01,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:01,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,785 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 04:48:01,787 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:48:01,789 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:48:01,792 WARN L141 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-02-24 04:48:01,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:01,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:48:01,797 WARN L147 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size 25 [2021-02-24 04:48:01,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:48:01,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:48:01,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:48:01,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:48:01,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:48:01,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:48:02,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:48:02,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 04:48:02,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 04:48:02,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:48:02,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:02,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89940045] [2021-02-24 04:48:02,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:02,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-24 04:48:02,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424121854] [2021-02-24 04:48:02,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 04:48:02,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:02,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 04:48:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:48:02,212 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 18 states. [2021-02-24 04:48:02,641 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-02-24 04:48:03,130 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-02-24 04:48:03,601 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-02-24 04:48:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:03,623 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-02-24 04:48:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:48:03,624 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2021-02-24 04:48:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:03,625 INFO L225 Difference]: With dead ends: 34 [2021-02-24 04:48:03,626 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:48:03,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 04:48:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:48:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:48:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:48:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:48:03,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-02-24 04:48:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:03,629 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:48:03,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 04:48:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:48:03,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:48:03,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:48:03,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:48:04,123 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 19 [2021-02-24 04:48:04,283 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 21 [2021-02-24 04:48:04,400 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 20 [2021-02-24 04:48:04,521 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:48:04,521 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:48:04,521 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:48:04,522 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:48:04,522 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:48:04,522 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:48:04,522 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:48:04,522 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:48:04,522 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 04:48:04,523 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 04:48:04,523 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:48:04,523 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:48:04,523 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:48:04,523 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:48:04,524 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:48:04,524 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:48:04,524 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:48:04,524 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 22) the Hoare annotation is: true [2021-02-24 04:48:04,524 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 12 22) the Hoare annotation is: true [2021-02-24 04:48:04,524 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (and (<= 2 main_~x~0) (= (mod main_~y~0 2) 0) (<= main_~x~0 8) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) (= main_~x~0 1)) [2021-02-24 04:48:04,525 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (or (= main_~x~0 0) (and (<= main_~x~0 7) (<= 1 main_~x~0) (= (mod main_~y~0 2) 0) (< (mod main_~x~0 4294967296) 6))) [2021-02-24 04:48:04,525 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (let ((.cse0 (= |main_#t~post7| main_~x~0))) (or (and .cse0 (= main_~x~0 0)) (and (<= main_~x~0 7) (<= 1 main_~x~0) (= (mod main_~y~0 2) 0) (< (mod main_~x~0 4294967296) 6) .cse0))) [2021-02-24 04:48:04,525 INFO L185 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (= (+ |main_#t~post7| 1) main_~x~0))) (or (and (= |main_#t~post7| 0) .cse0) (and .cse0 (= (mod main_~y~0 2) 0) (<= 1 |main_#t~post7|) (< (mod |main_#t~post7| 4294967296) 6) (<= |main_#t~post7| 7)))) [2021-02-24 04:48:04,525 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:48:04,526 INFO L185 CegarLoopUtils]: At program point L16-2(lines 16 19) the Hoare annotation is: (let ((.cse0 (= (mod main_~y~0 (- 2)) 0))) (or (and (= (mod (div (- main_~y~0) (- 2)) 2) 0) (<= 2 main_~x~0) .cse0 (<= main_~x~0 8) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) (= main_~x~0 0) (and .cse0 (= main_~x~0 1)))) [2021-02-24 04:48:04,526 INFO L185 CegarLoopUtils]: At program point L16-3(lines 16 19) the Hoare annotation is: (and (= (mod (div (- main_~y~0) (- 2)) 2) 0) (< (+ (* 4294967296 (div main_~x~0 4294967296)) 5) main_~x~0) (<= 2 main_~x~0) (= (mod main_~y~0 (- 2)) 0) (<= main_~x~0 8) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) [2021-02-24 04:48:04,526 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 12 22) the Hoare annotation is: true [2021-02-24 04:48:04,526 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-24 04:48:04,527 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-24 04:48:04,527 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:48:04,527 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 04:48:04,527 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:48:04,527 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-24 04:48:04,528 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:48:04,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:48:04 BoogieIcfgContainer [2021-02-24 04:48:04,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:48:04,549 INFO L168 Benchmark]: Toolchain (without parser) took 6807.54 ms. Allocated memory was 157.3 MB in the beginning and 230.7 MB in the end (delta: 73.4 MB). Free memory was 133.2 MB in the beginning and 184.3 MB in the end (delta: -51.1 MB). Peak memory consumption was 103.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:04,550 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 157.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:48:04,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.32 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 122.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:04,551 INFO L168 Benchmark]: Boogie Preprocessor took 39.88 ms. Allocated memory is still 157.3 MB. Free memory was 122.9 MB in the beginning and 121.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:04,551 INFO L168 Benchmark]: RCFGBuilder took 541.08 ms. Allocated memory is still 157.3 MB. Free memory was 121.5 MB in the beginning and 108.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:04,552 INFO L168 Benchmark]: TraceAbstraction took 5963.17 ms. Allocated memory was 157.3 MB in the beginning and 230.7 MB in the end (delta: 73.4 MB). Free memory was 108.3 MB in the beginning and 184.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:04,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 157.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.32 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 122.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.88 ms. Allocated memory is still 157.3 MB. Free memory was 122.9 MB in the beginning and 121.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 541.08 ms. Allocated memory is still 157.3 MB. Free memory was 121.5 MB in the beginning and 108.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5963.17 ms. Allocated memory was 157.3 MB in the beginning and 230.7 MB in the end (delta: 73.4 MB). Free memory was 108.3 MB in the beginning and 184.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 16]: Loop Invariant Derived loop invariant: (((((-y / -2 % 2 == 0 && 2 <= x) && y % -2 == 0) && x <= 8) && (x + 4294967295) % 4294967296 < 6) || x == 0) || (y % -2 == 0 && x == 1) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 81 SDslu, 192 SDs, 0 SdLazy, 266 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 45 PreInvPairs, 64 NumberOfFragments, 250 HoareAnnotationTreeSize, 45 FomulaSimplifications, 953 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 31 FomulaSimplificationsInter, 938 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...