/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:21:56,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:21:56,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:21:56,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:21:56,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:21:56,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:21:56,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:21:56,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:21:56,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:21:56,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:21:56,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:21:56,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:21:56,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:21:56,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:21:56,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:21:56,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:21:56,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:21:56,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:21:56,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:21:56,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:21:56,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:21:56,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:21:56,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:21:56,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:21:56,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:21:56,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:21:56,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:21:56,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:21:56,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:21:56,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:21:56,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:21:56,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:21:56,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:21:56,252 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:21:56,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:21:56,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:21:56,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:21:56,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:21:56,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:21:56,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:21:56,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:21:56,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:21:56,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:21:56,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:21:56,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:21:56,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:21:56,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:21:56,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:21:56,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:21:56,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:21:56,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:21:56,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:21:56,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:21:56,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:21:56,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:21:56,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:21:56,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:21:56,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:21:56,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:21:56,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:21:56,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:21:56,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:21:56,775 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:21:56,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2021-02-21 16:21:56,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329d64cdc/0cb8f7b6d429473893996cb594cf2ad5/FLAG32a9f9a38 [2021-02-21 16:21:57,659 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:21:57,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2021-02-21 16:21:57,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329d64cdc/0cb8f7b6d429473893996cb594cf2ad5/FLAG32a9f9a38 [2021-02-21 16:21:57,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329d64cdc/0cb8f7b6d429473893996cb594cf2ad5 [2021-02-21 16:21:57,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:21:57,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:21:57,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:21:57,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:21:57,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:21:57,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:21:57" (1/1) ... [2021-02-21 16:21:57,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e65905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:57, skipping insertion in model container [2021-02-21 16:21:57,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:21:57" (1/1) ... [2021-02-21 16:21:58,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:21:58,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:21:58,303 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c[11478,11491] [2021-02-21 16:21:58,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:21:58,330 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:21:58,369 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c[11478,11491] [2021-02-21 16:21:58,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:21:58,389 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:21:58,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58 WrapperNode [2021-02-21 16:21:58,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:21:58,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:21:58,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:21:58,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:21:58,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... [2021-02-21 16:21:58,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... [2021-02-21 16:21:58,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... [2021-02-21 16:21:58,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... [2021-02-21 16:21:58,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... [2021-02-21 16:21:58,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... [2021-02-21 16:21:58,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... [2021-02-21 16:21:58,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:21:58,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:21:58,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:21:58,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:21:58,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:21:58,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:21:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:21:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:21:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:21:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:21:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:21:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:21:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:21:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:21:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:21:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:21:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:21:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:21:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:21:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:21:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:21:59,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:21:59,497 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 16:21:59,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:21:59 BoogieIcfgContainer [2021-02-21 16:21:59,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:21:59,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:21:59,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:21:59,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:21:59,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:21:57" (1/3) ... [2021-02-21 16:21:59,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6181a357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:21:59, skipping insertion in model container [2021-02-21 16:21:59,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:21:58" (2/3) ... [2021-02-21 16:21:59,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6181a357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:21:59, skipping insertion in model container [2021-02-21 16:21:59,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:21:59" (3/3) ... [2021-02-21 16:21:59,510 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2021-02-21 16:21:59,517 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:21:59,523 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:21:59,545 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:21:59,579 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:21:59,579 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:21:59,580 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:21:59,580 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:21:59,580 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:21:59,580 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:21:59,580 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:21:59,580 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:21:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-21 16:21:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-21 16:21:59,608 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:21:59,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:21:59,610 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:21:59,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:21:59,617 INFO L82 PathProgramCache]: Analyzing trace with hash 782677814, now seen corresponding path program 1 times [2021-02-21 16:21:59,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:21:59,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329340359] [2021-02-21 16:21:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:21:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:21:59,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:21:59,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:21:59,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:21:59,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:22:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:00,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:00,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:22:00,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329340359] [2021-02-21 16:22:00,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:22:00,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:22:00,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082967552] [2021-02-21 16:22:00,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:22:00,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:22:00,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:22:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:22:00,094 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2021-02-21 16:22:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:22:00,164 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2021-02-21 16:22:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:22:00,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-02-21 16:22:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:22:00,179 INFO L225 Difference]: With dead ends: 136 [2021-02-21 16:22:00,180 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 16:22:00,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:22:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 16:22:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-21 16:22:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-21 16:22:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2021-02-21 16:22:00,239 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2021-02-21 16:22:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:22:00,240 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2021-02-21 16:22:00,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:22:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2021-02-21 16:22:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:22:00,241 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:22:00,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:22:00,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:22:00,242 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:22:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:22:00,244 INFO L82 PathProgramCache]: Analyzing trace with hash -974298051, now seen corresponding path program 1 times [2021-02-21 16:22:00,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:22:00,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420366523] [2021-02-21 16:22:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:22:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:00,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:00,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:00,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:00,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:22:00,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:00,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:22:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:00,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:00,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:22:00,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420366523] [2021-02-21 16:22:00,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:22:00,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:22:00,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486564514] [2021-02-21 16:22:00,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:22:00,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:22:00,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:22:00,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:22:00,535 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 4 states. [2021-02-21 16:22:00,691 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-21 16:22:00,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:22:00,996 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2021-02-21 16:22:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:22:00,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-02-21 16:22:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:22:00,999 INFO L225 Difference]: With dead ends: 119 [2021-02-21 16:22:00,999 INFO L226 Difference]: Without dead ends: 64 [2021-02-21 16:22:01,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:22:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-21 16:22:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-21 16:22:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-21 16:22:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2021-02-21 16:22:01,015 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 14 [2021-02-21 16:22:01,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:22:01,015 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2021-02-21 16:22:01,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:22:01,015 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2021-02-21 16:22:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 16:22:01,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:22:01,017 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:22:01,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:22:01,017 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:22:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:22:01,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1391675463, now seen corresponding path program 1 times [2021-02-21 16:22:01,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:22:01,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962733255] [2021-02-21 16:22:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:22:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:01,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:01,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:22:01,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:01,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:22:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:01,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:22:01,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962733255] [2021-02-21 16:22:01,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:22:01,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:22:01,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822414261] [2021-02-21 16:22:01,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:22:01,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:22:01,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:22:01,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:22:01,179 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 4 states. [2021-02-21 16:22:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:22:01,493 INFO L93 Difference]: Finished difference Result 127 states and 189 transitions. [2021-02-21 16:22:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:22:01,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-21 16:22:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:22:01,496 INFO L225 Difference]: With dead ends: 127 [2021-02-21 16:22:01,496 INFO L226 Difference]: Without dead ends: 70 [2021-02-21 16:22:01,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:22:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-21 16:22:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-02-21 16:22:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-21 16:22:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2021-02-21 16:22:01,514 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 19 [2021-02-21 16:22:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:22:01,515 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2021-02-21 16:22:01,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:22:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2021-02-21 16:22:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 16:22:01,516 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:22:01,516 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:22:01,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:22:01,517 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:22:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:22:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1816133832, now seen corresponding path program 1 times [2021-02-21 16:22:01,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:22:01,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368021281] [2021-02-21 16:22:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:22:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:01,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:01,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:22:01,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:22:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:01,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:01,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:22:01,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368021281] [2021-02-21 16:22:01,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:22:01,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:22:01,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639168772] [2021-02-21 16:22:01,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:22:01,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:22:01,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:22:01,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:22:01,722 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand 4 states. [2021-02-21 16:22:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:22:02,141 INFO L93 Difference]: Finished difference Result 186 states and 276 transitions. [2021-02-21 16:22:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:22:02,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-21 16:22:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:22:02,144 INFO L225 Difference]: With dead ends: 186 [2021-02-21 16:22:02,145 INFO L226 Difference]: Without dead ends: 121 [2021-02-21 16:22:02,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:22:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-21 16:22:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2021-02-21 16:22:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-02-21 16:22:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 164 transitions. [2021-02-21 16:22:02,162 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 164 transitions. Word has length 24 [2021-02-21 16:22:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:22:02,162 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 164 transitions. [2021-02-21 16:22:02,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:22:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 164 transitions. [2021-02-21 16:22:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 16:22:02,164 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:22:02,164 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:22:02,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:22:02,164 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:22:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:22:02,165 INFO L82 PathProgramCache]: Analyzing trace with hash -973997031, now seen corresponding path program 1 times [2021-02-21 16:22:02,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:22:02,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620069751] [2021-02-21 16:22:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:22:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:02,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:02,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:22:02,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:22:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:02,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 16:22:02,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620069751] [2021-02-21 16:22:02,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:22:02,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:22:02,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137973963] [2021-02-21 16:22:02,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:22:02,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:22:02,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:22:02,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:22:02,314 INFO L87 Difference]: Start difference. First operand 112 states and 164 transitions. Second operand 4 states. [2021-02-21 16:22:02,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:22:02,493 INFO L93 Difference]: Finished difference Result 182 states and 268 transitions. [2021-02-21 16:22:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:22:02,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-02-21 16:22:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:22:02,495 INFO L225 Difference]: With dead ends: 182 [2021-02-21 16:22:02,495 INFO L226 Difference]: Without dead ends: 77 [2021-02-21 16:22:02,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:22:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-21 16:22:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-02-21 16:22:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-21 16:22:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2021-02-21 16:22:02,508 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 31 [2021-02-21 16:22:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:22:02,508 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2021-02-21 16:22:02,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:22:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2021-02-21 16:22:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-21 16:22:02,510 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:22:02,510 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:22:02,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 16:22:02,511 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:22:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:22:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1174611002, now seen corresponding path program 1 times [2021-02-21 16:22:02,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:22:02,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271789911] [2021-02-21 16:22:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:22:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:02,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:02,581 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-21 16:22:02,582 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-21 16:22:02,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:22:02,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:22:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:22:02,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:22:02,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:22:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 16:22:02,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271789911] [2021-02-21 16:22:02,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:22:02,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:22:02,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748714783] [2021-02-21 16:22:02,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:22:02,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:22:02,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:22:02,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:22:02,679 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand 5 states. [2021-02-21 16:22:03,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:22:03,011 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2021-02-21 16:22:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:22:03,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2021-02-21 16:22:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:22:03,012 INFO L225 Difference]: With dead ends: 80 [2021-02-21 16:22:03,012 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:22:03,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-21 16:22:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:22:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:22:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:22:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:22:03,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-02-21 16:22:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:22:03,019 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:22:03,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:22:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:22:03,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:22:03,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 16:22:03,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:22:03,230 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2021-02-21 16:22:03,358 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 16:22:03,358 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 16:22:03,358 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 16:22:03,359 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:22:03,361 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|) (= |old(#valid)| |#valid|) (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_flush~0 |old(~m_flush~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-21 16:22:03,361 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:22:03,361 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:22:03,361 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:22:03,361 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:22:03,362 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:22:03,362 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 15 346) no Hoare annotation was computed. [2021-02-21 16:22:03,363 INFO L189 CegarLoopUtils]: For program point L36(lines 36 51) no Hoare annotation was computed. [2021-02-21 16:22:03,363 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 15 346) no Hoare annotation was computed. [2021-02-21 16:22:03,363 INFO L189 CegarLoopUtils]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-02-21 16:22:03,363 INFO L189 CegarLoopUtils]: For program point L88(lines 88 103) no Hoare annotation was computed. [2021-02-21 16:22:03,363 INFO L189 CegarLoopUtils]: For program point L55(lines 55 106) no Hoare annotation was computed. [2021-02-21 16:22:03,363 INFO L189 CegarLoopUtils]: For program point L204(lines 204 219) no Hoare annotation was computed. [2021-02-21 16:22:03,363 INFO L189 CegarLoopUtils]: For program point L72(lines 72 87) no Hoare annotation was computed. [2021-02-21 16:22:03,364 INFO L189 CegarLoopUtils]: For program point L320(lines 320 335) no Hoare annotation was computed. [2021-02-21 16:22:03,364 INFO L189 CegarLoopUtils]: For program point L188(lines 188 203) no Hoare annotation was computed. [2021-02-21 16:22:03,364 INFO L189 CegarLoopUtils]: For program point L56(lines 56 71) no Hoare annotation was computed. [2021-02-21 16:22:03,364 INFO L185 CegarLoopUtils]: At program point L337(lines 25 341) the Hoare annotation is: (or (= main_~q~0 0) (and (= main_~this_sink~0 0) (= main_~q~0 2)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L304(lines 304 319) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L172(lines 172 187) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L288(lines 288 303) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L156(lines 156 171) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L90(lines 90 101) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L272(lines 272 287) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L206(lines 206 217) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L140(lines 140 155) no Hoare annotation was computed. [2021-02-21 16:22:03,365 INFO L189 CegarLoopUtils]: For program point L107(lines 107 222) no Hoare annotation was computed. [2021-02-21 16:22:03,366 INFO L189 CegarLoopUtils]: For program point L74(lines 74 85) no Hoare annotation was computed. [2021-02-21 16:22:03,366 INFO L189 CegarLoopUtils]: For program point L322(lines 322 333) no Hoare annotation was computed. [2021-02-21 16:22:03,366 INFO L189 CegarLoopUtils]: For program point L256(lines 256 271) no Hoare annotation was computed. [2021-02-21 16:22:03,366 INFO L189 CegarLoopUtils]: For program point L223(lines 223 338) no Hoare annotation was computed. [2021-02-21 16:22:03,367 INFO L189 CegarLoopUtils]: For program point L190(lines 190 201) no Hoare annotation was computed. [2021-02-21 16:22:03,367 INFO L189 CegarLoopUtils]: For program point L124(lines 124 139) no Hoare annotation was computed. [2021-02-21 16:22:03,368 INFO L189 CegarLoopUtils]: For program point L58(lines 58 69) no Hoare annotation was computed. [2021-02-21 16:22:03,368 INFO L185 CegarLoopUtils]: At program point L25-2(lines 25 341) the Hoare annotation is: (or (and (= main_~q~0 0) (= main_~this_sink~0 0)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2021-02-21 16:22:03,369 INFO L189 CegarLoopUtils]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2021-02-21 16:22:03,369 INFO L189 CegarLoopUtils]: For program point L306(lines 306 317) no Hoare annotation was computed. [2021-02-21 16:22:03,369 INFO L189 CegarLoopUtils]: For program point L240(lines 240 255) no Hoare annotation was computed. [2021-02-21 16:22:03,369 INFO L189 CegarLoopUtils]: For program point L174(lines 174 185) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L108(lines 108 123) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L290(lines 290 301) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L224(lines 224 239) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L158(lines 158 169) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L274(lines 274 285) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L142(lines 142 153) no Hoare annotation was computed. [2021-02-21 16:22:03,370 INFO L189 CegarLoopUtils]: For program point L258(lines 258 269) no Hoare annotation was computed. [2021-02-21 16:22:03,371 INFO L189 CegarLoopUtils]: For program point L126(lines 126 137) no Hoare annotation was computed. [2021-02-21 16:22:03,371 INFO L189 CegarLoopUtils]: For program point L242(lines 242 253) no Hoare annotation was computed. [2021-02-21 16:22:03,371 INFO L189 CegarLoopUtils]: For program point L110(lines 110 121) no Hoare annotation was computed. [2021-02-21 16:22:03,371 INFO L189 CegarLoopUtils]: For program point L226(lines 226 237) no Hoare annotation was computed. [2021-02-21 16:22:03,371 INFO L189 CegarLoopUtils]: For program point L94(lines 94 96) no Hoare annotation was computed. [2021-02-21 16:22:03,371 INFO L189 CegarLoopUtils]: For program point L210(lines 210 212) no Hoare annotation was computed. [2021-02-21 16:22:03,372 INFO L189 CegarLoopUtils]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-02-21 16:22:03,372 INFO L189 CegarLoopUtils]: For program point L326(lines 326 328) no Hoare annotation was computed. [2021-02-21 16:22:03,372 INFO L189 CegarLoopUtils]: For program point L194(lines 194 196) no Hoare annotation was computed. [2021-02-21 16:22:03,372 INFO L189 CegarLoopUtils]: For program point L62(lines 62 64) no Hoare annotation was computed. [2021-02-21 16:22:03,375 INFO L189 CegarLoopUtils]: For program point L310(lines 310 312) no Hoare annotation was computed. [2021-02-21 16:22:03,378 INFO L189 CegarLoopUtils]: For program point L178(lines 178 180) no Hoare annotation was computed. [2021-02-21 16:22:03,378 INFO L185 CegarLoopUtils]: At program point L327(lines 15 346) the Hoare annotation is: false [2021-02-21 16:22:03,378 INFO L189 CegarLoopUtils]: For program point L294(lines 294 296) no Hoare annotation was computed. [2021-02-21 16:22:03,383 INFO L189 CegarLoopUtils]: For program point L162(lines 162 164) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 15 346) the Hoare annotation is: true [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point L278(lines 278 280) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point L146(lines 146 148) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point L262(lines 262 264) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point L130(lines 130 132) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point L246(lines 246 248) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point L114(lines 114 116) no Hoare annotation was computed. [2021-02-21 16:22:03,384 INFO L189 CegarLoopUtils]: For program point L230(lines 230 232) no Hoare annotation was computed. [2021-02-21 16:22:03,385 INFO L189 CegarLoopUtils]: For program point L35(lines 35 54) no Hoare annotation was computed. [2021-02-21 16:22:03,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:22:03 BoogieIcfgContainer [2021-02-21 16:22:03,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:22:03,416 INFO L168 Benchmark]: Toolchain (without parser) took 5441.57 ms. Allocated memory was 156.2 MB in the beginning and 197.1 MB in the end (delta: 40.9 MB). Free memory was 132.0 MB in the beginning and 144.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 106.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:22:03,416 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:22:03,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.95 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 119.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:22:03,422 INFO L168 Benchmark]: Boogie Preprocessor took 55.58 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:22:03,427 INFO L168 Benchmark]: RCFGBuilder took 1051.78 ms. Allocated memory is still 156.2 MB. Free memory was 117.1 MB in the beginning and 88.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:22:03,428 INFO L168 Benchmark]: TraceAbstraction took 3911.79 ms. Allocated memory was 156.2 MB in the beginning and 197.1 MB in the end (delta: 40.9 MB). Free memory was 87.9 MB in the beginning and 144.1 MB in the end (delta: -56.2 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:22:03,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 401.95 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 119.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.58 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1051.78 ms. Allocated memory is still 156.2 MB. Free memory was 117.1 MB in the beginning and 88.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3911.79 ms. Allocated memory was 156.2 MB in the beginning and 197.1 MB in the end (delta: 40.9 MB). Free memory was 87.9 MB in the beginning and 144.1 MB in the end (delta: -56.2 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 345]: 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: 25]: Loop Invariant Derived loop invariant: (q == 0 || (this_sink == 0 && q == 2)) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 534 SDtfs, 657 SDslu, 37 SDs, 0 SdLazy, 379 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=4, 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, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 98 HoareAnnotationTreeSize, 7 FomulaSimplifications, 239 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 289 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 14314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, 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...