/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/loop-invariants/eq2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:46:00,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:46:00,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:46:00,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:46:00,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:46:00,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:46:00,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:46:00,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:46:01,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:46:01,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:46:01,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:46:01,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:46:01,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:46:01,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:46:01,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:46:01,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:46:01,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:46:01,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:46:01,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:46:01,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:46:01,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:46:01,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:46:01,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:46:01,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:46:01,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:46:01,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:46:01,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:46:01,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:46:01,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:46:01,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:46:01,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:46:01,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:46:01,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:46:01,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:46:01,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:46:01,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:46:01,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:46:01,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:46:01,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:46:01,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:46:01,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:46:01,101 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 [2020-10-23 18:46:01,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:46:01,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:46:01,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:46:01,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:46:01,169 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:46:01,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:46:01,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:46:01,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:46:01,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:46:01,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:46:01,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:46:01,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:46:01,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:46:01,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:46:01,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:46:01,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:46:01,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:46:01,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:46:01,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:46:01,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:46:01,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:46:01,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:46:01,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:46:01,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:46:01,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:46:01,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:46:01,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:46:01,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:46:01,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:46:01,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:46:01,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:46:01,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:46:01,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:46:01,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:46:01,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:46:01,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c [2020-10-23 18:46:01,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6fb96c1/154260ece5fd41e18aa08724de5f1268/FLAGda8c8dfb8 [2020-10-23 18:46:02,418 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:46:02,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq2.c [2020-10-23 18:46:02,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6fb96c1/154260ece5fd41e18aa08724de5f1268/FLAGda8c8dfb8 [2020-10-23 18:46:02,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6fb96c1/154260ece5fd41e18aa08724de5f1268 [2020-10-23 18:46:02,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:46:02,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:46:02,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:46:02,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:46:02,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:46:02,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:46:02" (1/1) ... [2020-10-23 18:46:02,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed3496b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:02, skipping insertion in model container [2020-10-23 18:46:02,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:46:02" (1/1) ... [2020-10-23 18:46:02,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:46:02,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:46:03,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:46:03,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:46:03,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:46:03,079 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:46:03,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03 WrapperNode [2020-10-23 18:46:03,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:46:03,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:46:03,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:46:03,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:46:03,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (1/1) ... [2020-10-23 18:46:03,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (1/1) ... [2020-10-23 18:46:03,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (1/1) ... [2020-10-23 18:46:03,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (1/1) ... [2020-10-23 18:46:03,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (1/1) ... [2020-10-23 18:46:03,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (1/1) ... [2020-10-23 18:46:03,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (1/1) ... [2020-10-23 18:46:03,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:46:03,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:46:03,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:46:03,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:46:03,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (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 18:46:03,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:46:03,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:46:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:46:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:46:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:46:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:46:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:46:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:46:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:46:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 18:46:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:46:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:46:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:46:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:46:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:46:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:46:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:46:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:46:03,512 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:46:03,512 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:46:03,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:46:03 BoogieIcfgContainer [2020-10-23 18:46:03,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:46:03,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:46:03,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:46:03,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:46:03,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:46:02" (1/3) ... [2020-10-23 18:46:03,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5450c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:46:03, skipping insertion in model container [2020-10-23 18:46:03,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:46:03" (2/3) ... [2020-10-23 18:46:03,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5450c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:46:03, skipping insertion in model container [2020-10-23 18:46:03,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:46:03" (3/3) ... [2020-10-23 18:46:03,546 INFO L111 eAbstractionObserver]: Analyzing ICFG eq2.c [2020-10-23 18:46:03,562 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:46:03,568 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:46:03,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:46:03,637 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:46:03,637 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:46:03,637 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:46:03,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:46:03,638 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:46:03,638 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:46:03,638 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:46:03,638 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:46:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-23 18:46:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:46:03,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:03,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:03,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:03,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:03,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1256715792, now seen corresponding path program 1 times [2020-10-23 18:46:03,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:03,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510696755] [2020-10-23 18:46:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:04,283 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2020-10-23 18:46:04,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:46:04,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510696755] [2020-10-23 18:46:04,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:46:04,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:46:04,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159149134] [2020-10-23 18:46:04,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:46:04,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:04,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:46:04,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:46:04,449 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-10-23 18:46:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:04,784 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-23 18:46:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:46:04,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-23 18:46:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:04,794 INFO L225 Difference]: With dead ends: 33 [2020-10-23 18:46:04,795 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:46:04,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:46:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:46:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:46:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:46:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:46:04,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-23 18:46:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:04,836 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:46:04,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:46:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:46:04,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:46:04,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:46:04,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:46:05,106 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:46:05,107 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:46:05,107 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:46:05,108 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:46:05,108 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:46:05,108 INFO L270 CegarLoopResult]: 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|)) [2020-10-23 18:46:05,108 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:46:05,108 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:46:05,109 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:46:05,109 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:46:05,109 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:46:05,109 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2020-10-23 18:46:05,109 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 11 22) no Hoare annotation was computed. [2020-10-23 18:46:05,110 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-23 18:46:05,110 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 19) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= main_~z~0 main_~y~0))) [2020-10-23 18:46:05,110 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 19) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= main_~z~0 main_~y~0))) [2020-10-23 18:46:05,111 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 11 22) no Hoare annotation was computed. [2020-10-23 18:46:05,111 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-23 18:46:05,112 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:46:05,113 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:46:05,113 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:46:05,113 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-23 18:46:05,113 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:46:05,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:46:05 BoogieIcfgContainer [2020-10-23 18:46:05,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:46:05,144 INFO L168 Benchmark]: Toolchain (without parser) took 2359.73 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 61.7 MB in the end (delta: 65.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:05,147 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:46:05,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.59 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:05,152 INFO L168 Benchmark]: Boogie Preprocessor took 42.03 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:05,155 INFO L168 Benchmark]: RCFGBuilder took 390.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 102.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:05,157 INFO L168 Benchmark]: TraceAbstraction took 1608.97 ms. Allocated memory is still 151.0 MB. Free memory was 134.9 MB in the beginning and 61.7 MB in the end (delta: 73.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:46:05,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.59 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.03 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 390.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 102.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1608.97 ms. Allocated memory is still 151.0 MB. Free memory was 134.9 MB in the beginning and 61.7 MB in the end (delta: 73.2 MB). Peak memory consumption was 73.4 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: 16]: Loop Invariant Derived loop invariant: (z + 4294967296 * (y / 4294967296) <= y + 4294967296 * (z / 4294967296) && y + 4294967296 * (z / 4294967296) < z + 4294967296 * (y / 4294967296) + 1) && z <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 14 SDslu, 23 SDs, 0 SdLazy, 25 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 9 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 109 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 1265 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...