/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/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:58:00,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:58:00,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:58:00,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:58:00,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:58:00,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:58:00,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:58:00,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:58:00,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:58:00,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:58:00,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:58:00,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:58:00,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:58:00,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:58:00,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:58:00,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:58:00,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:58:00,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:58:00,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:58:00,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:58:00,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:58:00,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:58:00,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:58:00,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:58:00,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:58:00,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:58:00,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:58:00,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:58:00,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:58:00,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:58:00,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:58:00,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:58:00,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:58:00,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:58:00,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:58:00,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:58:00,348 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:58:00,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:58:00,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:58:00,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:58:00,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:58:00,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:58:00,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:58:00,369 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:58:00,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:58:00,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:58:00,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:58:00,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:58:00,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:58:00,803 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:58:00,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2021-02-22 01:58:00,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb19fd6ee/8319bb396892485da837619970645caa/FLAGf2511cf1b [2021-02-22 01:58:01,455 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:58:01,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2021-02-22 01:58:01,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb19fd6ee/8319bb396892485da837619970645caa/FLAGf2511cf1b [2021-02-22 01:58:01,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb19fd6ee/8319bb396892485da837619970645caa [2021-02-22 01:58:01,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:58:01,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:58:01,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:58:01,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:58:01,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:58:01,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:58:01" (1/1) ... [2021-02-22 01:58:01,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363d787b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:01, skipping insertion in model container [2021-02-22 01:58:01,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:58:01" (1/1) ... [2021-02-22 01:58:01,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:58:01,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:58:02,139 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c[580,593] [2021-02-22 01:58:02,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:58:02,162 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:58:02,181 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c[580,593] [2021-02-22 01:58:02,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:58:02,204 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:58:02,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02 WrapperNode [2021-02-22 01:58:02,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:58:02,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:58:02,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:58:02,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:58:02,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... [2021-02-22 01:58:02,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... [2021-02-22 01:58:02,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... [2021-02-22 01:58:02,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... [2021-02-22 01:58:02,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... [2021-02-22 01:58:02,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... [2021-02-22 01:58:02,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... [2021-02-22 01:58:02,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:58:02,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:58:02,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:58:02,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:58:02,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:58:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:58:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:58:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:58:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:58:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:58:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:58:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:58:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:58:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:58:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:58:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:58:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:58:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:58:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:58:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:58:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:58:02,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:58:02,670 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:58:02,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:58:02 BoogieIcfgContainer [2021-02-22 01:58:02,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:58:02,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:58:02,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:58:02,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:58:02,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:58:01" (1/3) ... [2021-02-22 01:58:02,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c7df2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:58:02, skipping insertion in model container [2021-02-22 01:58:02,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:02" (2/3) ... [2021-02-22 01:58:02,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c7df2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:58:02, skipping insertion in model container [2021-02-22 01:58:02,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:58:02" (3/3) ... [2021-02-22 01:58:02,709 INFO L111 eAbstractionObserver]: Analyzing ICFG test29-2.c [2021-02-22 01:58:02,724 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:58:02,729 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:58:02,752 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:58:02,780 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:58:02,780 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:58:02,780 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:58:02,780 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:58:02,780 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:58:02,780 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:58:02,781 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:58:02,781 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:58:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-22 01:58:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-22 01:58:02,808 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:58:02,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:58:02,809 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:58:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:58:02,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1684913090, now seen corresponding path program 1 times [2021-02-22 01:58:02,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:58:02,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485143850] [2021-02-22 01:58:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:58:02,936 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:58:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:03,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:03,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:58:03,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:58:03,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:58:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:03,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:58:03,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485143850] [2021-02-22 01:58:03,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:58:03,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:58:03,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509362173] [2021-02-22 01:58:03,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:58:03,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:58:03,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:58:03,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:58:03,357 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 5 states. [2021-02-22 01:58:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:58:03,609 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-02-22 01:58:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:58:03,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-22 01:58:03,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:58:03,624 INFO L225 Difference]: With dead ends: 89 [2021-02-22 01:58:03,624 INFO L226 Difference]: Without dead ends: 46 [2021-02-22 01:58:03,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:58:03,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-22 01:58:03,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2021-02-22 01:58:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-22 01:58:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-02-22 01:58:03,701 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 29 [2021-02-22 01:58:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:58:03,702 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-02-22 01:58:03,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:58:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-02-22 01:58:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-22 01:58:03,705 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:58:03,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:58:03,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:58:03,706 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:58:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:58:03,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1911061662, now seen corresponding path program 1 times [2021-02-22 01:58:03,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:58:03,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344367108] [2021-02-22 01:58:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:58:03,718 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:58:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:03,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:03,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 01:58:03,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:58:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:03,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:03,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:58:03,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344367108] [2021-02-22 01:58:03,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:58:03,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:58:03,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345253013] [2021-02-22 01:58:03,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:58:03,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:58:03,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:58:03,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:58:03,905 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2021-02-22 01:58:03,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:58:03,997 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-22 01:58:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:58:03,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2021-02-22 01:58:03,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:58:04,000 INFO L225 Difference]: With dead ends: 42 [2021-02-22 01:58:04,000 INFO L226 Difference]: Without dead ends: 37 [2021-02-22 01:58:04,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:58:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-22 01:58:04,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-22 01:58:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-22 01:58:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-02-22 01:58:04,010 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 29 [2021-02-22 01:58:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:58:04,011 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-02-22 01:58:04,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:58:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-02-22 01:58:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-22 01:58:04,012 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:58:04,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:58:04,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:58:04,013 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:58:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:58:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2041206465, now seen corresponding path program 1 times [2021-02-22 01:58:04,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:58:04,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436072525] [2021-02-22 01:58:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:58:04,017 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:58:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:04,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:04,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:58:04,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:58:04,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:58:04,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:58:04,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:58:04,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 01:58:04,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:58:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:04,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:58:04,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436072525] [2021-02-22 01:58:04,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:58:04,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:58:04,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011665179] [2021-02-22 01:58:04,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:58:04,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:58:04,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:58:04,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:58:04,217 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2021-02-22 01:58:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:58:04,382 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-02-22 01:58:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:58:04,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2021-02-22 01:58:04,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:58:04,384 INFO L225 Difference]: With dead ends: 46 [2021-02-22 01:58:04,384 INFO L226 Difference]: Without dead ends: 32 [2021-02-22 01:58:04,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:58:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-22 01:58:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-02-22 01:58:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-22 01:58:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-02-22 01:58:04,392 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 31 [2021-02-22 01:58:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:58:04,392 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-02-22 01:58:04,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:58:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-02-22 01:58:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-22 01:58:04,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:58:04,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:58:04,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:58:04,394 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:58:04,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:58:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1860060673, now seen corresponding path program 1 times [2021-02-22 01:58:04,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:58:04,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033104419] [2021-02-22 01:58:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:58:04,397 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:58:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:04,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:04,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:58:04,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:58:04,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 01:58:04,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:58:04,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:58:04,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 01:58:04,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:58:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:04,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:04,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:58:04,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033104419] [2021-02-22 01:58:04,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:58:04,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:58:04,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218092292] [2021-02-22 01:58:04,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:58:04,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:58:04,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:58:04,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:58:04,521 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 9 states. [2021-02-22 01:58:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:58:04,623 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2021-02-22 01:58:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:58:04,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2021-02-22 01:58:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:58:04,624 INFO L225 Difference]: With dead ends: 32 [2021-02-22 01:58:04,625 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:58:04,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:58:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:58:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:58:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:58:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:58:04,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-22 01:58:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:58:04,627 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:58:04,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:58:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:58:04,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:58:04,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:58:04,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:58:04,932 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:58:04,933 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:58:04,933 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:58:04,933 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:58:04,933 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:58:04,933 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:04,934 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:58:04,934 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:04,934 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:58:04,934 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|)) [2021-02-22 01:58:04,934 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:58:04,935 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:58:04,935 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:58:04,935 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:58:04,935 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:04,935 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:58:04,935 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:58:04,935 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-22 01:58:04,936 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 13 31) the Hoare annotation is: true [2021-02-22 01:58:04,936 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 .cse1 (= |main_~#d1~0.base| main_~pd~0.base) (not |main_#t~short10|)) (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) .cse1))) [2021-02-22 01:58:04,936 INFO L185 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,937 INFO L185 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_#t~mem9| 0) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,937 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_~#d1~0.offset| main_~pd~0.offset) (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= |main_~#d1~0.base| main_~pd~0.base)) [2021-02-22 01:58:04,937 INFO L185 CegarLoopUtils]: At program point L23-4(lines 23 25) the Hoare annotation is: (not |main_#t~short10|) [2021-02-22 01:58:04,937 INFO L185 CegarLoopUtils]: At program point L23-5(line 23) the Hoare annotation is: false [2021-02-22 01:58:04,937 INFO L185 CegarLoopUtils]: At program point L23-6(line 23) the Hoare annotation is: false [2021-02-22 01:58:04,937 INFO L192 CegarLoopUtils]: At program point L23-7(line 23) the Hoare annotation is: true [2021-02-22 01:58:04,938 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= (select |#valid| |main_~#d1~0.base|) 1) [2021-02-22 01:58:04,938 INFO L192 CegarLoopUtils]: At program point L23-8(line 23) the Hoare annotation is: true [2021-02-22 01:58:04,938 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,938 INFO L192 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: true [2021-02-22 01:58:04,938 INFO L192 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: true [2021-02-22 01:58:04,938 INFO L192 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: true [2021-02-22 01:58:04,939 INFO L192 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: true [2021-02-22 01:58:04,939 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: false [2021-02-22 01:58:04,939 INFO L185 CegarLoopUtils]: At program point L15-7(line 15) the Hoare annotation is: false [2021-02-22 01:58:04,939 INFO L185 CegarLoopUtils]: At program point L15-8(line 15) the Hoare annotation is: false [2021-02-22 01:58:04,939 INFO L185 CegarLoopUtils]: At program point L15-9(line 15) the Hoare annotation is: false [2021-02-22 01:58:04,939 INFO L185 CegarLoopUtils]: At program point L24(lines 14 31) the Hoare annotation is: false [2021-02-22 01:58:04,939 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,940 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,940 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: false [2021-02-22 01:58:04,940 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,940 INFO L185 CegarLoopUtils]: At program point L21-1(lines 18 22) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) .cse1) (and .cse0 .cse1 (= |main_~#d1~0.base| main_~pd~0.base)))) [2021-02-22 01:58:04,941 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,941 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,941 INFO L185 CegarLoopUtils]: At program point L17-3(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-22 01:58:04,941 INFO L185 CegarLoopUtils]: At program point L17-4(line 17) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_#t~ite8.base| |main_~#d2~0.base|) (= |main_~#d2~0.offset| |main_#t~ite8.offset|) .cse1) (and (= |main_~#d1~0.offset| |main_#t~ite8.offset|) .cse0 (= |main_~#d1~0.base| |main_#t~ite8.base|) .cse1))) [2021-02-22 01:58:04,941 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 13 31) the Hoare annotation is: true [2021-02-22 01:58:04,942 INFO L185 CegarLoopUtils]: At program point L17-5(line 17) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= |main_#t~ite8.base| |main_~#d2~0.base|) (= |main_~#d2~0.offset| |main_#t~ite8.offset|) .cse1) (and (= |main_~#d1~0.offset| |main_#t~ite8.offset|) .cse0 (= |main_~#d1~0.offset| main_~pd~0.offset) (= |main_~#d1~0.base| |main_#t~ite8.base|) .cse1 (= |main_~#d1~0.base| main_~pd~0.base)))) [2021-02-22 01:58:04,942 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) the Hoare annotation is: false [2021-02-22 01:58:04,942 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: false [2021-02-22 01:58:04,942 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-22 01:58:04,942 INFO L185 CegarLoopUtils]: At program point L18(lines 18 22) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d1~0.offset| main_~pd~0.offset) .cse1 (= |main_~#d1~0.base| main_~pd~0.base)) (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) .cse1))) [2021-02-22 01:58:04,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:58:04 BoogieIcfgContainer [2021-02-22 01:58:04,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:58:04,956 INFO L168 Benchmark]: Toolchain (without parser) took 3115.64 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.9 MB in the beginning and 130.2 MB in the end (delta: -347.3 kB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:04,956 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:58:04,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 119.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:04,958 INFO L168 Benchmark]: Boogie Preprocessor took 58.97 ms. Allocated memory is still 153.1 MB. Free memory was 119.3 MB in the beginning and 118.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:04,959 INFO L168 Benchmark]: RCFGBuilder took 408.73 ms. Allocated memory is still 153.1 MB. Free memory was 117.9 MB in the beginning and 136.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:04,960 INFO L168 Benchmark]: TraceAbstraction took 2259.86 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 135.7 MB in the beginning and 130.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 86.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:04,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 119.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.97 ms. Allocated memory is still 153.1 MB. Free memory was 119.3 MB in the beginning and 118.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 408.73 ms. Allocated memory is still 153.1 MB. Free memory was 117.9 MB in the beginning and 136.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2259.86 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 135.7 MB in the beginning and 130.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 86.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: 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: 14]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 79 SDslu, 293 SDs, 0 SdLazy, 248 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 51 PreInvPairs, 79 NumberOfFragments, 405 HoareAnnotationTreeSize, 51 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 51 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s 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...