/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:11:22,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:11:22,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:11:22,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:11:22,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:11:22,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:11:22,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:11:22,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:11:22,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:11:22,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:11:22,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:11:22,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:11:22,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:11:22,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:11:22,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:11:22,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:11:22,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:11:22,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:11:22,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:11:22,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:11:22,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:11:22,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:11:22,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:11:22,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:11:22,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:11:22,382 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:11:22,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:11:22,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:11:22,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:11:22,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:11:22,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:11:22,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:11:22,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:11:22,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:11:22,386 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:11:22,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:11:22,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:11:22,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:11:22,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:11:22,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:11:22,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:11:22,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:11:22,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:11:22,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:11:22,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:11:22,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:11:22,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:11:22,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:11:22,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:11:22,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:11:22,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:11:22,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:11:22,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:11:22,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:11:22,870 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:11:22,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test03.c [2021-02-21 16:11:22,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e5f6ac1/8d615697fc874a4eb879da50aae78c92/FLAGe80628ca1 [2021-02-21 16:11:23,782 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:11:23,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test03.c [2021-02-21 16:11:23,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e5f6ac1/8d615697fc874a4eb879da50aae78c92/FLAGe80628ca1 [2021-02-21 16:11:24,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e5f6ac1/8d615697fc874a4eb879da50aae78c92 [2021-02-21 16:11:24,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:11:24,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:11:24,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:11:24,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:11:24,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:11:24,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0b020e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24, skipping insertion in model container [2021-02-21 16:11:24,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:11:24,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:11:24,336 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/test03.c[477,490] [2021-02-21 16:11:24,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:11:24,358 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:11:24,377 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/test03.c[477,490] [2021-02-21 16:11:24,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:11:24,397 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:11:24,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24 WrapperNode [2021-02-21 16:11:24,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:11:24,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:11:24,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:11:24,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:11:24,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... [2021-02-21 16:11:24,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:11:24,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:11:24,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:11:24,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:11:24,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:11:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:11:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:11:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:11:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-21 16:11:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:11:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:11:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:11:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:11:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:11:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-21 16:11:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:11:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:11:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:11:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:11:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:11:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:11:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:11:24,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:11:24,828 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:11:24,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:11:24 BoogieIcfgContainer [2021-02-21 16:11:24,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:11:24,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:11:24,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:11:24,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:11:24,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:11:24" (1/3) ... [2021-02-21 16:11:24,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef75c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:11:24, skipping insertion in model container [2021-02-21 16:11:24,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:24" (2/3) ... [2021-02-21 16:11:24,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef75c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:11:24, skipping insertion in model container [2021-02-21 16:11:24,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:11:24" (3/3) ... [2021-02-21 16:11:24,876 INFO L111 eAbstractionObserver]: Analyzing ICFG test03.c [2021-02-21 16:11:24,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:11:24,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:11:24,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:11:24,968 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:11:24,968 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:11:24,968 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:11:24,968 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:11:24,968 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:11:24,969 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:11:24,969 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:11:24,969 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:11:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-02-21 16:11:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-21 16:11:24,999 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:11:25,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:11:25,001 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:11:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:11:25,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1111948646, now seen corresponding path program 1 times [2021-02-21 16:11:25,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:11:25,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662972061] [2021-02-21 16:11:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:11:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:11:25,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:25,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:11:25,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:25,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:11:25,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:25,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:11:25,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:25,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:11:25,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:25,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:11:25,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:11:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:11:25,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:25,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:11:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 16:11:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:11:25,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:25,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:11:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:11:25,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662972061] [2021-02-21 16:11:25,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:11:25,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 16:11:25,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621111141] [2021-02-21 16:11:25,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 16:11:25,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:11:25,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 16:11:25,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:11:25,589 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2021-02-21 16:11:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:11:25,742 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-02-21 16:11:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:11:25,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-02-21 16:11:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:11:25,751 INFO L225 Difference]: With dead ends: 22 [2021-02-21 16:11:25,751 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:11:25,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-02-21 16:11:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:11:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:11:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:11:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:11:25,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-02-21 16:11:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:11:25,785 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:11:25,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 16:11:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:11:25,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:11:25,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:11:25,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:11:25,878 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:11:25,878 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:11:25,878 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:11:25,878 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:11:25,879 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= ~q~0 |old(~q~0)|) (= |#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|)) [2021-02-21 16:11:25,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:11:25,879 INFO L189 CegarLoopUtils]: For program point fEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:11:25,880 INFO L192 CegarLoopUtils]: At program point fENTRY(lines 6 8) the Hoare annotation is: true [2021-02-21 16:11:25,880 INFO L189 CegarLoopUtils]: For program point fFINAL(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:11:25,880 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:11:25,880 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:11:25,880 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:11:25,880 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:11:25,881 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 28) no Hoare annotation was computed. [2021-02-21 16:11:25,881 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 12 30) the Hoare annotation is: (and (= ~q~0 |old(~q~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-21 16:11:25,881 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 12 30) no Hoare annotation was computed. [2021-02-21 16:11:25,881 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 12 30) no Hoare annotation was computed. [2021-02-21 16:11:25,882 INFO L185 CegarLoopUtils]: At program point L23(lines 12 30) the Hoare annotation is: false [2021-02-21 16:11:25,882 INFO L189 CegarLoopUtils]: For program point L22(lines 22 24) no Hoare annotation was computed. [2021-02-21 16:11:25,882 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2021-02-21 16:11:25,882 INFO L189 CegarLoopUtils]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-02-21 16:11:25,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:11:25 BoogieIcfgContainer [2021-02-21 16:11:25,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:11:25,897 INFO L168 Benchmark]: Toolchain (without parser) took 1782.80 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 77.7 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:25,898 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:11:25,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:25,901 INFO L168 Benchmark]: Boogie Preprocessor took 36.96 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:25,902 INFO L168 Benchmark]: RCFGBuilder took 393.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 102.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:25,903 INFO L168 Benchmark]: TraceAbstraction took 1063.13 ms. Allocated memory is still 151.0 MB. Free memory was 101.9 MB in the beginning and 77.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:25,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.96 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 393.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 102.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1063.13 ms. Allocated memory is still 151.0 MB. Free memory was 101.9 MB in the beginning and 77.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 34 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 52 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 864 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...