/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:35:07,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:35:07,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:35:07,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:35:07,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:35:07,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:35:07,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:35:07,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:35:07,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:35:07,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:35:07,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:35:07,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:35:07,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:35:07,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:35:07,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:35:07,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:35:07,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:35:07,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:35:07,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:35:07,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:35:07,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:35:07,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:35:07,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:35:07,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:35:07,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:35:07,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:35:07,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:35:07,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:35:07,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:35:07,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:35:07,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:35:07,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:35:07,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:35:07,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:35:07,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:35:07,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:35:07,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:35:07,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:35:07,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:35:07,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:35:07,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:35:07,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:35:07,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:35:07,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:35:07,190 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:35:07,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:35:07,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:35:07,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:35:07,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:35:07,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:35:07,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:35:07,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:35:07,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:35:07,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:35:07,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:35:07,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:35:07,692 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:35:07,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-10-23 20:35:07,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9dff254/bb98473cbdcc41ea803fca79cb2af98f/FLAG2620ee2fb [2020-10-23 20:35:08,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:35:08,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-10-23 20:35:08,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9dff254/bb98473cbdcc41ea803fca79cb2af98f/FLAG2620ee2fb [2020-10-23 20:35:08,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9dff254/bb98473cbdcc41ea803fca79cb2af98f [2020-10-23 20:35:08,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:35:08,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:35:08,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:08,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:35:08,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:35:08,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ef9624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08, skipping insertion in model container [2020-10-23 20:35:08,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:35:08,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:35:08,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:08,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:35:08,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:08,876 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:35:08,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08 WrapperNode [2020-10-23 20:35:08,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:08,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:35:08,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:35:08,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:35:08,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (1/1) ... [2020-10-23 20:35:08,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:35:08,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:35:08,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:35:08,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:35:08,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (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 [2020-10-23 20:35:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:35:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:35:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:35:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-23 20:35:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-23 20:35:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-23 20:35:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:35:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:35:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:35:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:35:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:35:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:35:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-23 20:35:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-23 20:35:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:35:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-23 20:35:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 20:35:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:35:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:35:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:35:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:35:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:35:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:35:09,504 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:35:09,504 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:35:09,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:09 BoogieIcfgContainer [2020-10-23 20:35:09,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:35:09,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:35:09,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:35:09,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:35:09,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:35:08" (1/3) ... [2020-10-23 20:35:09,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c87ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:09, skipping insertion in model container [2020-10-23 20:35:09,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:08" (2/3) ... [2020-10-23 20:35:09,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c87ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:09, skipping insertion in model container [2020-10-23 20:35:09,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:09" (3/3) ... [2020-10-23 20:35:09,516 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-10-23 20:35:09,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:35:09,533 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:35:09,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:35:09,574 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:35:09,574 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:35:09,574 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:35:09,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:35:09,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:35:09,574 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:35:09,575 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:35:09,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:35:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-23 20:35:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-23 20:35:09,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:09,605 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-23 20:35:09,606 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1388877468, now seen corresponding path program 1 times [2020-10-23 20:35:09,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:09,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477592607] [2020-10-23 20:35:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:09,706 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:35:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 20:35:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 20:35:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 20:35:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-23 20:35:10,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477592607] [2020-10-23 20:35:10,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:10,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:35:10,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495614442] [2020-10-23 20:35:10,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:35:10,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:10,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:35:10,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:35:10,520 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 16 states. [2020-10-23 20:35:12,693 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-23 20:35:12,836 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:35:13,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:13,123 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-10-23 20:35:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 20:35:13,127 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-10-23 20:35:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:13,136 INFO L225 Difference]: With dead ends: 105 [2020-10-23 20:35:13,136 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:35:13,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 20:35:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:35:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:35:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:35:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:35:13,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2020-10-23 20:35:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:13,173 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:35:13,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:35:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:35:13,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:35:13,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:35:13,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:35:14,169 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 24 [2020-10-23 20:35:14,459 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-10-23 20:35:14,582 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-10-23 20:35:14,830 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,830 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,830 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,831 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,831 INFO L277 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-10-23 20:35:14,831 INFO L270 CegarLoopResult]: At program point initENTRY(lines 13 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-23 20:35:14,831 INFO L277 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-10-23 20:35:14,831 INFO L277 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-10-23 20:35:14,832 INFO L277 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: true [2020-10-23 20:35:14,832 INFO L277 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: true [2020-10-23 20:35:14,832 INFO L277 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-23 20:35:14,832 INFO L277 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: true [2020-10-23 20:35:14,832 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-23 20:35:14,832 INFO L277 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-10-23 20:35:14,833 INFO L277 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-10-23 20:35:14,833 INFO L277 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-10-23 20:35:14,833 INFO L277 CegarLoopResult]: At program point initEXIT(lines 13 20) the Hoare annotation is: true [2020-10-23 20:35:14,833 INFO L277 CegarLoopResult]: At program point initFINAL(lines 13 20) the Hoare annotation is: true [2020-10-23 20:35:14,833 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,833 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,834 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:35:14,834 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,834 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:35:14,834 INFO L277 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,834 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 11) the Hoare annotation is: true [2020-10-23 20:35:14,834 INFO L277 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-10-23 20:35:14,835 INFO L277 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: true [2020-10-23 20:35:14,835 INFO L270 CegarLoopResult]: 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)|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |old(#valid)| |#valid|) (= |old(~#d2~0.base)| |~#d2~0.base|) (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-23 20:35:14,835 INFO L277 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: true [2020-10-23 20:35:14,835 INFO L277 CegarLoopResult]: At program point L11-3(line 11) the Hoare annotation is: true [2020-10-23 20:35:14,835 INFO L277 CegarLoopResult]: At program point L11-4(line 11) the Hoare annotation is: true [2020-10-23 20:35:14,836 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,836 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:35:14,836 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:35:14,836 INFO L277 CegarLoopResult]: At program point get_dummyFINAL(lines 22 25) the Hoare annotation is: true [2020-10-23 20:35:14,836 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-23 20:35:14,836 INFO L277 CegarLoopResult]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2020-10-23 20:35:14,837 INFO L277 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: true [2020-10-23 20:35:14,837 INFO L277 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: true [2020-10-23 20:35:14,837 INFO L277 CegarLoopResult]: At program point L24-4(line 24) the Hoare annotation is: true [2020-10-23 20:35:14,837 INFO L277 CegarLoopResult]: At program point get_dummyEXIT(lines 22 25) the Hoare annotation is: true [2020-10-23 20:35:14,837 INFO L277 CegarLoopResult]: At program point L24-5(line 24) the Hoare annotation is: true [2020-10-23 20:35:14,837 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:35:14,837 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:35:14,838 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:35:14,838 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:35:14,838 INFO L277 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: true [2020-10-23 20:35:14,838 INFO L270 CegarLoopResult]: At program point L37-4(line 37) the Hoare annotation is: (and (<= 1 |main_#t~ret17|) (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-10-23 20:35:14,838 INFO L277 CegarLoopResult]: At program point L35-3(line 35) the Hoare annotation is: true [2020-10-23 20:35:14,839 INFO L277 CegarLoopResult]: At program point L35-4(line 35) the Hoare annotation is: true [2020-10-23 20:35:14,839 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 32 46) the Hoare annotation is: true [2020-10-23 20:35:14,839 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 32 46) the Hoare annotation is: true [2020-10-23 20:35:14,839 INFO L270 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: false [2020-10-23 20:35:14,839 INFO L270 CegarLoopResult]: At program point L38(lines 33 46) the Hoare annotation is: false [2020-10-23 20:35:14,839 INFO L277 CegarLoopResult]: At program point L36(lines 36 40) the Hoare annotation is: true [2020-10-23 20:35:14,840 INFO L277 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-10-23 20:35:14,840 INFO L277 CegarLoopResult]: At program point L36-2(lines 36 40) the Hoare annotation is: true [2020-10-23 20:35:14,840 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 32 46) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-23 20:35:14,840 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: false [2020-10-23 20:35:14,840 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-10-23 20:35:14,840 INFO L270 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (and (<= 1 |main_#t~ret17|) (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-10-23 20:35:14,841 INFO L277 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-10-23 20:35:14,841 INFO L270 CegarLoopResult]: At program point L37-2(lines 37 39) the Hoare annotation is: (and (<= 1 |main_#t~ret17|) (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-10-23 20:35:14,841 INFO L277 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: true [2020-10-23 20:35:14,841 INFO L270 CegarLoopResult]: At program point L37-3(line 37) the Hoare annotation is: false [2020-10-23 20:35:14,841 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 27 30) the Hoare annotation is: true [2020-10-23 20:35:14,842 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or (not (= |check_#in~s1.base| |check_#in~s2.base|)) .cse0) (or (= check_~s1.offset check_~s2.offset) (not (= |check_#in~s1.offset| |check_#in~s2.offset|)) (not .cse0)))) [2020-10-23 20:35:14,842 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 (= |check_#t~mem13| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse2) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-10-23 20:35:14,842 INFO L270 CegarLoopResult]: At program point L27(lines 27 30) the Hoare annotation is: (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|)) [2020-10-23 20:35:14,843 INFO L270 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (let ((.cse1 (= check_~s1.base check_~s2.base)) (.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|)))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 (= |check_#t~mem13| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse2) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)) (or .cse0 .cse2 (= |check_#t~mem14| |check_#t~mem13|)))) [2020-10-23 20:35:14,843 INFO L270 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: (let ((.cse1 (= check_~s1.base check_~s2.base)) (.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|)))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 (= |check_#t~mem13| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse2) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)) (or .cse0 .cse2 (= |check_#t~mem14| |check_#t~mem13|)))) [2020-10-23 20:35:14,843 INFO L270 CegarLoopResult]: At program point L29-4(line 29) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-10-23 20:35:14,843 INFO L270 CegarLoopResult]: At program point checkFINAL(lines 27 30) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-10-23 20:35:14,844 INFO L270 CegarLoopResult]: At program point checkEXIT(lines 27 30) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-10-23 20:35:14,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:35:14 BoogieIcfgContainer [2020-10-23 20:35:14,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:35:14,868 INFO L168 Benchmark]: Toolchain (without parser) took 6327.79 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 127.2 MB in the beginning and 114.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 98.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:14,869 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:35:14,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.60 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:14,871 INFO L168 Benchmark]: Boogie Preprocessor took 42.31 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:14,872 INFO L168 Benchmark]: RCFGBuilder took 585.27 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:14,874 INFO L168 Benchmark]: TraceAbstraction took 5356.81 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 131.1 MB in the beginning and 114.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 100.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:14,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.60 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.31 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 585.27 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5356.81 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 131.1 MB in the beginning and 114.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 100.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for init Derived contract for procedure init: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for get_dummy Derived contract for procedure get_dummy: 1 - ProcedureContractResult [Line: 32]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 27]: Procedure Contract for check Derived contract for procedure check: (((s1 == s1 && s1 == s1) && (!(s1 == s2) || s1 == s2)) && ((!(s1 == s2) || !(s1 == s2)) || 1 <= \result)) && ((s1 == s2 || !(s1 == s2)) || !(s1 == s2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 138 SDslu, 85 SDs, 0 SdLazy, 804 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 74 LocationsWithAnnotation, 99 PreInvPairs, 140 NumberOfFragments, 463 HoareAnnotationTreeSize, 99 FomulaSimplifications, 2003 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 74 FomulaSimplificationsInter, 2019 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...