/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:07,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:07,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:07,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:07,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:05:07,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:05:07,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:05:07,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:05:07,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:05:07,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:05:07,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:05:07,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:05:07,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:05:07,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:05:07,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:05:07,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:05:07,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:05:07,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:05:07,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:05:07,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:05:07,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:05:07,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:07,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:07,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:07,407 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:07,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:07,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:07,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:07,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:07,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:07,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:07,411 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:07,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:07,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:07,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:07,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:07,413 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:07,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:07,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:07,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:07,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:07,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:07,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:07,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:07,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:07,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:07,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:07,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:07,900 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:07,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2021-02-23 23:05:08,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf3b6b12/f26ccb2e3f4b43eba212fb16c77bbfcc/FLAGd57c91b7f [2021-02-23 23:05:08,635 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:08,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2021-02-23 23:05:08,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf3b6b12/f26ccb2e3f4b43eba212fb16c77bbfcc/FLAGd57c91b7f [2021-02-23 23:05:09,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf3b6b12/f26ccb2e3f4b43eba212fb16c77bbfcc [2021-02-23 23:05:09,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:09,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:09,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:09,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:09,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:09,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ed13b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09, skipping insertion in model container [2021-02-23 23:05:09,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:09,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:09,207 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/test11.c[823,836] [2021-02-23 23:05:09,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:09,223 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:09,244 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/test11.c[823,836] [2021-02-23 23:05:09,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:09,264 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:09,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09 WrapperNode [2021-02-23 23:05:09,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:09,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:09,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:09,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:09,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (1/1) ... [2021-02-23 23:05:09,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:09,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:09,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:09,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:09,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (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 [2021-02-23 23:05:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-02-23 23:05:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:05:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 23:05:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-02-23 23:05:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:10,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:10,036 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:05:10,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:10 BoogieIcfgContainer [2021-02-23 23:05:10,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:10,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:10,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:10,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:10,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:09" (1/3) ... [2021-02-23 23:05:10,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daceb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:10, skipping insertion in model container [2021-02-23 23:05:10,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:09" (2/3) ... [2021-02-23 23:05:10,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daceb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:10, skipping insertion in model container [2021-02-23 23:05:10,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:10" (3/3) ... [2021-02-23 23:05:10,054 INFO L111 eAbstractionObserver]: Analyzing ICFG test11.c [2021-02-23 23:05:10,062 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:10,068 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:10,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:10,131 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:10,132 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:10,132 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:10,132 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:10,132 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:10,132 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:10,132 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:10,133 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-02-23 23:05:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 23:05:10,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:10,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:10,175 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:10,184 INFO L82 PathProgramCache]: Analyzing trace with hash -181270899, now seen corresponding path program 1 times [2021-02-23 23:05:10,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:10,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99015484] [2021-02-23 23:05:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:10,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:10,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:10,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:10,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:10,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:10,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:10,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:10,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:05:10,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:10,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:10,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:10,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:10,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:05:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:10,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:10,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:10,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99015484] [2021-02-23 23:05:10,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:10,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:05:10,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234225129] [2021-02-23 23:05:10,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:05:10,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:05:10,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:05:10,865 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2021-02-23 23:05:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:11,136 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2021-02-23 23:05:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:05:11,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2021-02-23 23:05:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:11,161 INFO L225 Difference]: With dead ends: 99 [2021-02-23 23:05:11,162 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 23:05:11,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:05:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 23:05:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-23 23:05:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 23:05:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-02-23 23:05:11,254 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 48 [2021-02-23 23:05:11,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:11,255 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-02-23 23:05:11,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:05:11,255 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-02-23 23:05:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 23:05:11,259 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:11,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:11,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:11,260 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1534970838, now seen corresponding path program 1 times [2021-02-23 23:05:11,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:11,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986705770] [2021-02-23 23:05:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:11,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:11,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:11,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:05:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:11,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:11,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986705770] [2021-02-23 23:05:11,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:11,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:05:11,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931771967] [2021-02-23 23:05:11,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:05:11,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:11,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:05:11,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:05:11,467 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 5 states. [2021-02-23 23:05:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:11,679 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2021-02-23 23:05:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:05:11,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2021-02-23 23:05:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:11,681 INFO L225 Difference]: With dead ends: 80 [2021-02-23 23:05:11,681 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 23:05:11,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:05:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 23:05:11,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-23 23:05:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 23:05:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-02-23 23:05:11,702 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 51 [2021-02-23 23:05:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:11,703 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-02-23 23:05:11,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:05:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-02-23 23:05:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 23:05:11,705 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:11,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:11,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:05:11,706 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash 835838071, now seen corresponding path program 1 times [2021-02-23 23:05:11,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:11,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528403256] [2021-02-23 23:05:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:11,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 23:05:11,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:11,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:11,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:05:11,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:05:11,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:11,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:05:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:11,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:11,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:11,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528403256] [2021-02-23 23:05:11,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:11,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:05:11,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889222583] [2021-02-23 23:05:11,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:05:11,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:11,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:05:11,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:05:11,984 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 8 states. [2021-02-23 23:05:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:12,307 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-02-23 23:05:12,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 23:05:12,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2021-02-23 23:05:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:12,310 INFO L225 Difference]: With dead ends: 66 [2021-02-23 23:05:12,310 INFO L226 Difference]: Without dead ends: 60 [2021-02-23 23:05:12,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:05:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-23 23:05:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-02-23 23:05:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-23 23:05:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-02-23 23:05:12,327 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 54 [2021-02-23 23:05:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:12,327 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-02-23 23:05:12,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:05:12,328 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-02-23 23:05:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 23:05:12,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:12,330 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, 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] [2021-02-23 23:05:12,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:05:12,330 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:12,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:12,331 INFO L82 PathProgramCache]: Analyzing trace with hash 639269039, now seen corresponding path program 1 times [2021-02-23 23:05:12,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:12,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208022476] [2021-02-23 23:05:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:12,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:12,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:12,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:12,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:12,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:12,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:12,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:12,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:12,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:12,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:12,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:12,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:05:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:12,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:12,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:12,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208022476] [2021-02-23 23:05:12,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:12,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:05:12,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931419316] [2021-02-23 23:05:12,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:05:12,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:12,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:05:12,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:05:12,552 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 6 states. [2021-02-23 23:05:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:12,735 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-02-23 23:05:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:05:12,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-23 23:05:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:12,737 INFO L225 Difference]: With dead ends: 60 [2021-02-23 23:05:12,737 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:05:12,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:05:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:05:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:05:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:05:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:05:12,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-02-23 23:05:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:12,739 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:05:12,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:05:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:05:12,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:05:12,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:05:12,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:05:13,675 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 23:05:13,676 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 23:05:13,676 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 23:05:13,676 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 23:05:13,676 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 23:05:13,676 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:13,676 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 23:05:13,677 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:13,677 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-23 23:05:13,677 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 7) the Hoare annotation is: true [2021-02-23 23:05:13,677 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-23 23:05:13,678 INFO L192 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: true [2021-02-23 23:05:13,678 INFO L192 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: true [2021-02-23 23:05:13,678 INFO L192 CegarLoopUtils]: At program point L7-2(line 7) the Hoare annotation is: true [2021-02-23 23:05:13,678 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 23:05:13,678 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 23:05:13,678 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:13,678 INFO L192 CegarLoopUtils]: At program point get_dummyFINAL(lines 9 12) the Hoare annotation is: true [2021-02-23 23:05:13,679 INFO L192 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: true [2021-02-23 23:05:13,679 INFO L192 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: true [2021-02-23 23:05:13,679 INFO L192 CegarLoopUtils]: At program point L11-3(line 11) the Hoare annotation is: true [2021-02-23 23:05:13,679 INFO L192 CegarLoopUtils]: At program point get_dummyENTRY(lines 9 12) the Hoare annotation is: true [2021-02-23 23:05:13,679 INFO L192 CegarLoopUtils]: At program point L11-4(line 11) the Hoare annotation is: true [2021-02-23 23:05:13,679 INFO L192 CegarLoopUtils]: At program point L11-5(line 11) the Hoare annotation is: true [2021-02-23 23:05:13,679 INFO L192 CegarLoopUtils]: At program point get_dummyEXIT(lines 9 12) the Hoare annotation is: true [2021-02-23 23:05:13,680 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:13,680 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:13,680 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 23:05:13,680 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:05:13,680 INFO L185 CegarLoopUtils]: At program point L27(lines 14 34) the Hoare annotation is: false [2021-02-23 23:05:13,680 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 14 34) the Hoare annotation is: (not (= main_~pc~0.base 0)) [2021-02-23 23:05:13,680 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,681 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,681 INFO L185 CegarLoopUtils]: At program point L19-2(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,681 INFO L185 CegarLoopUtils]: At program point L19-3(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,681 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2021-02-23 23:05:13,681 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2021-02-23 23:05:13,681 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2021-02-23 23:05:13,682 INFO L185 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2021-02-23 23:05:13,682 INFO L185 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2021-02-23 23:05:13,682 INFO L185 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: false [2021-02-23 23:05:13,682 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: false [2021-02-23 23:05:13,682 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: false [2021-02-23 23:05:13,682 INFO L185 CegarLoopUtils]: At program point L20(lines 20 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,683 INFO L185 CegarLoopUtils]: At program point L20-1(lines 20 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,683 INFO L185 CegarLoopUtils]: At program point L20-3(lines 20 23) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,683 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2021-02-23 23:05:13,683 INFO L185 CegarLoopUtils]: At program point L20-4(lines 20 21) the Hoare annotation is: false [2021-02-23 23:05:13,683 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2021-02-23 23:05:13,683 INFO L185 CegarLoopUtils]: At program point L20-5(lines 20 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,684 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2021-02-23 23:05:13,684 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: false [2021-02-23 23:05:13,684 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,684 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= (select (select |#memory_int| |main_~#c~0.base|) |main_~#c~0.offset|) 60) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,684 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,685 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,685 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,685 INFO L185 CegarLoopUtils]: At program point L21-3(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,685 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,686 INFO L185 CegarLoopUtils]: At program point L21-4(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,686 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,686 INFO L185 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,686 INFO L185 CegarLoopUtils]: At program point L21-6(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,686 INFO L185 CegarLoopUtils]: At program point L21-7(line 21) the Hoare annotation is: false [2021-02-23 23:05:13,686 INFO L185 CegarLoopUtils]: At program point L21-8(line 21) the Hoare annotation is: false [2021-02-23 23:05:13,687 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 14 34) the Hoare annotation is: (not (= main_~pc~0.base 0)) [2021-02-23 23:05:13,687 INFO L185 CegarLoopUtils]: At program point L21-9(line 21) the Hoare annotation is: false [2021-02-23 23:05:13,687 INFO L185 CegarLoopUtils]: At program point L21-10(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,687 INFO L185 CegarLoopUtils]: At program point L21-11(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,687 INFO L185 CegarLoopUtils]: At program point L21-12(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,687 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 32) the Hoare annotation is: false [2021-02-23 23:05:13,688 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2021-02-23 23:05:13,688 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 14 34) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 23:05:13,688 INFO L185 CegarLoopUtils]: At program point L26(lines 26 28) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (= |main_#t~mem17| 60) (not (= |main_~#c~0.base| 0)) (= (select (select |#memory_int| |main_~#c~0.base|) |main_~#c~0.offset|) 60) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,688 INFO L185 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: false [2021-02-23 23:05:13,688 INFO L185 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2021-02-23 23:05:13,689 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,689 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,689 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 23:05:13,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:13 BoogieIcfgContainer [2021-02-23 23:05:13,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:13,710 INFO L168 Benchmark]: Toolchain (without parser) took 4699.25 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.1 MB in the beginning and 145.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 98.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:13,711 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:13,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:13,713 INFO L168 Benchmark]: Boogie Preprocessor took 41.78 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:13,713 INFO L168 Benchmark]: RCFGBuilder took 730.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 127.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:13,714 INFO L168 Benchmark]: TraceAbstraction took 3665.69 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.9 MB in the beginning and 145.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 98.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:13,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.78 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 730.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 127.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3665.69 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.9 MB in the beginning and 145.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 98.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: 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: 9]: Procedure Contract for get_dummy Derived contract for procedure get_dummy: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: !(pc == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 223 SDtfs, 161 SDslu, 453 SDs, 0 SdLazy, 420 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 76 LocationsWithAnnotation, 76 PreInvPairs, 93 NumberOfFragments, 644 HoareAnnotationTreeSize, 76 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 76 FomulaSimplificationsInter, 746 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 38023 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...