/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/bitvector/jain_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:40,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:40,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:40,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:40,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:40,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:40,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:40,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:40,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:40,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:40,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:40,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:40,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:40,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:40,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:40,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:40,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:40,317 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 22:36:40,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:40,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:40,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:40,345 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:40,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:40,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:40,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:40,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:40,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:40,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:40,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:40,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:40,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:40,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:40,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:40,349 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:40,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:40,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:40,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:40,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:40,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:40,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:40,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:40,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:40,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:40,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:40,783 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:40,784 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:40,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_2-1.c [2021-02-23 22:36:40,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7b92a83/590f3384595f47588cff2c5ac996d52d/FLAG3e7f4633d [2021-02-23 22:36:41,430 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:41,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c [2021-02-23 22:36:41,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7b92a83/590f3384595f47588cff2c5ac996d52d/FLAG3e7f4633d [2021-02-23 22:36:41,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7b92a83/590f3384595f47588cff2c5ac996d52d [2021-02-23 22:36:41,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:41,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:41,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:41,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:41,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:41,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:41" (1/1) ... [2021-02-23 22:36:41,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bbf851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:41, skipping insertion in model container [2021-02-23 22:36:41,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:41" (1/1) ... [2021-02-23 22:36:41,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:41,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:42,041 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c[370,383] [2021-02-23 22:36:42,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:42,075 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:42,090 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c[370,383] [2021-02-23 22:36:42,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:42,114 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:42,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42 WrapperNode [2021-02-23 22:36:42,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:42,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:42,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:42,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:42,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (1/1) ... [2021-02-23 22:36:42,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (1/1) ... [2021-02-23 22:36:42,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (1/1) ... [2021-02-23 22:36:42,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (1/1) ... [2021-02-23 22:36:42,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (1/1) ... [2021-02-23 22:36:42,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (1/1) ... [2021-02-23 22:36:42,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (1/1) ... [2021-02-23 22:36:42,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:42,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:42,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:42,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:42,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (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 22:36:42,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:42,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:42,357 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:42,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 22:36:42,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 22:36:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 22:36:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:42,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:42,744 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 22:36:42,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:42 BoogieIcfgContainer [2021-02-23 22:36:42,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:42,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:42,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:42,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:42,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:41" (1/3) ... [2021-02-23 22:36:42,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6345f316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:42, skipping insertion in model container [2021-02-23 22:36:42,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:42" (2/3) ... [2021-02-23 22:36:42,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6345f316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:42, skipping insertion in model container [2021-02-23 22:36:42,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:42" (3/3) ... [2021-02-23 22:36:42,756 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_2-1.c [2021-02-23 22:36:42,763 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:42,768 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:42,789 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:42,816 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:42,816 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:42,816 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:42,816 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:42,816 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:42,817 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:42,817 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:42,817 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:42,840 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-23 22:36:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-23 22:36:42,850 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:42,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:36:42,851 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:42,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:42,858 INFO L82 PathProgramCache]: Analyzing trace with hash 176343128, now seen corresponding path program 1 times [2021-02-23 22:36:42,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:42,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836332748] [2021-02-23 22:36:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:43,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:43,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:43,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:43,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:36:43,151 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 22:36:43,153 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 22:36:43,174 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-02-23 22:36:43,176 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-02-23 22:36:43,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:43,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 22:36:43,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:43,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 22:36:43,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:43,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 22:36:43,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:43,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:43,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:43,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:43,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:43,378 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 22:36:43,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836332748] [2021-02-23 22:36:43,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:43,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:36:43,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114797557] [2021-02-23 22:36:43,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:36:43,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:43,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:36:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:36:43,406 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 9 states. [2021-02-23 22:36:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:44,065 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2021-02-23 22:36:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 22:36:44,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2021-02-23 22:36:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:44,075 INFO L225 Difference]: With dead ends: 58 [2021-02-23 22:36:44,075 INFO L226 Difference]: Without dead ends: 40 [2021-02-23 22:36:44,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-02-23 22:36:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-23 22:36:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2021-02-23 22:36:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 22:36:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-02-23 22:36:44,130 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2021-02-23 22:36:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:44,131 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-02-23 22:36:44,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:36:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-02-23 22:36:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 22:36:44,133 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:44,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:36:44,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:44,134 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash 713992716, now seen corresponding path program 1 times [2021-02-23 22:36:44,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:44,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012820841] [2021-02-23 22:36:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:44,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:44,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:36:44,336 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 22:36:44,337 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 22:36:44,347 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-02-23 22:36:44,348 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-02-23 22:36:44,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 22:36:44,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 22:36:44,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 22:36:44,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 22:36:44,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 22:36:44,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:44,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:44,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-02-23 22:36:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:44,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:44,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:36:44,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012820841] [2021-02-23 22:36:44,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:36:44,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 22:36:44,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872851584] [2021-02-23 22:36:44,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 22:36:44,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:44,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 22:36:44,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:36:44,478 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 10 states. [2021-02-23 22:36:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:44,844 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-02-23 22:36:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 22:36:44,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2021-02-23 22:36:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:44,846 INFO L225 Difference]: With dead ends: 38 [2021-02-23 22:36:44,846 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 22:36:44,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-02-23 22:36:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 22:36:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 22:36:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 22:36:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 22:36:44,849 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-02-23 22:36:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:44,849 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 22:36:44,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 22:36:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 22:36:44,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 22:36:44,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:36:44,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 22:36:45,336 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 22:36:45,337 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 22:36:45,338 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 22:36:45,338 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 22:36:45,338 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 22:36:45,338 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:36:45,339 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 22:36:45,339 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 22:36:45,339 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 22:36:45,339 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 22:36:45,339 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 22:36:45,340 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 22:36:45,340 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:36:45,340 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2021-02-23 22:36:45,340 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:36:45,340 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 22:36:45,340 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2021-02-23 22:36:45,340 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 28) the Hoare annotation is: true [2021-02-23 22:36:45,341 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-23 22:36:45,341 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 12 28) the Hoare annotation is: false [2021-02-23 22:36:45,341 INFO L185 CegarLoopUtils]: At program point L25-1(lines 19 26) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-23 22:36:45,341 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-23 22:36:45,341 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-23 22:36:45,342 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-23 22:36:45,342 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-23 22:36:45,342 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (= main_~x~0 1) [2021-02-23 22:36:45,343 INFO L185 CegarLoopUtils]: At program point L19-2(lines 19 26) the Hoare annotation is: false [2021-02-23 22:36:45,343 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-23 22:36:45,343 INFO L192 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: true [2021-02-23 22:36:45,343 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 12 28) the Hoare annotation is: false [2021-02-23 22:36:45,343 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2021-02-23 22:36:45,343 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 22:36:45,344 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 22:36:45,344 INFO L185 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 22:36:45,344 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 22:36:45,344 INFO L185 CegarLoopUtils]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 22:36:45,345 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 22:36:45,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:45 BoogieIcfgContainer [2021-02-23 22:36:45,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:45,370 INFO L168 Benchmark]: Toolchain (without parser) took 3589.54 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 123.2 MB in the beginning and 170.2 MB in the end (delta: -47.0 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:45,370 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 165.7 MB. Free memory is still 139.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:45,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.57 ms. Allocated memory is still 165.7 MB. Free memory was 149.0 MB in the beginning and 139.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:45,372 INFO L168 Benchmark]: Boogie Preprocessor took 58.03 ms. Allocated memory is still 165.7 MB. Free memory was 139.9 MB in the beginning and 138.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:45,373 INFO L168 Benchmark]: RCFGBuilder took 569.14 ms. Allocated memory is still 165.7 MB. Free memory was 138.5 MB in the beginning and 137.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:45,374 INFO L168 Benchmark]: TraceAbstraction took 2619.35 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 137.1 MB in the beginning and 170.2 MB in the end (delta: -33.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:45,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 165.7 MB. Free memory is still 139.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.57 ms. Allocated memory is still 165.7 MB. Free memory was 149.0 MB in the beginning and 139.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.03 ms. Allocated memory is still 165.7 MB. Free memory was 139.9 MB in the beginning and 138.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.14 ms. Allocated memory is still 165.7 MB. Free memory was 138.5 MB in the beginning and 137.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2619.35 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 137.1 MB in the beginning and 170.2 MB in the end (delta: -33.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: x + y + 2 <= 2 * ((x + y + 2) / 2) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 55 SDslu, 147 SDs, 0 SdLazy, 156 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=1, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 48 PreInvPairs, 64 NumberOfFragments, 165 HoareAnnotationTreeSize, 48 FomulaSimplifications, 316 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 618 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 11488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 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...