/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:42:49,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:42:49,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:42:49,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:42:49,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:42:49,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:42:49,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:42:49,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:42:49,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:42:49,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:42:49,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:42:49,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:42:49,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:42:49,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:42:49,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:42:49,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:42:49,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:42:49,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:42:49,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:42:49,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:42:49,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:42:49,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:42:49,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:42:49,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:42:49,506 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:42:49,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:42:49,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:42:49,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:42:49,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:42:49,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:42:49,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:42:49,508 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:42:49,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:42:49,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:42:49,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:42:49,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:42:49,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:42:49,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:42:49,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:42:49,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:42:49,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:42:49,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:42:49,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:42:49,509 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:42:49,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:42:49,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:42:49,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:42:49,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:42:49,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:42:49,765 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:42:49,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-05-01 07:42:49,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429ee066d/4d319bb04f1b4a959a1d38d4b080cbc6/FLAG79dc10817 [2021-05-01 07:42:50,170 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:42:50,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-05-01 07:42:50,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429ee066d/4d319bb04f1b4a959a1d38d4b080cbc6/FLAG79dc10817 [2021-05-01 07:42:50,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429ee066d/4d319bb04f1b4a959a1d38d4b080cbc6 [2021-05-01 07:42:50,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:42:50,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:42:50,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:42:50,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:42:50,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:42:50,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529b139d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50, skipping insertion in model container [2021-05-01 07:42:50,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:42:50,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:42:50,322 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469] [2021-05-01 07:42:50,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:42:50,340 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:42:50,348 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469] [2021-05-01 07:42:50,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:42:50,361 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:42:50,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50 WrapperNode [2021-05-01 07:42:50,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:42:50,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:42:50,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:42:50,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:42:50,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (1/1) ... [2021-05-01 07:42:50,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:42:50,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:42:50,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:42:50,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:42:50,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (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 [2021-05-01 07:42:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:42:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:42:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:42:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:42:50,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:42:50,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:42:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:42:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:42:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:42:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:42:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:42:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:42:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:42:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:42:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:42:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:42:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:42:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:42:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:42:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:42:50,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:42:50,673 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 07:42:50,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:42:50 BoogieIcfgContainer [2021-05-01 07:42:50,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:42:50,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:42:50,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:42:50,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:42:50,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:42:50" (1/3) ... [2021-05-01 07:42:50,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727b4445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:42:50, skipping insertion in model container [2021-05-01 07:42:50,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:50" (2/3) ... [2021-05-01 07:42:50,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727b4445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:42:50, skipping insertion in model container [2021-05-01 07:42:50,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:42:50" (3/3) ... [2021-05-01 07:42:50,679 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2021-05-01 07:42:50,683 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:42:50,685 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:42:50,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:42:50,739 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:42:50,739 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:42:50,739 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:42:50,739 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:42:50,739 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:42:50,739 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:42:50,739 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:42:50,740 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:42:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:42:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 07:42:50,758 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:50,758 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:50,759 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:50,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:50,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1965397839, now seen corresponding path program 1 times [2021-05-01 07:42:50,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:50,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160873305] [2021-05-01 07:42:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:50,812 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:42:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:50,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:50,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:50,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:50,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:42:50,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:50,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:50,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:50,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:50,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:50,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:42:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:50,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:42:51,003 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:42:51,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160873305] [2021-05-01 07:42:51,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1160873305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:42:51,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:42:51,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 07:42:51,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783896318] [2021-05-01 07:42:51,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 07:42:51,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:42:51,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 07:42:51,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 07:42:51,020 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:42:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:42:51,305 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-05-01 07:42:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 07:42:51,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-01 07:42:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:42:51,310 INFO L225 Difference]: With dead ends: 43 [2021-05-01 07:42:51,310 INFO L226 Difference]: Without dead ends: 16 [2021-05-01 07:42:51,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-01 07:42:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-01 07:42:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-05-01 07:42:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:42:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-01 07:42:51,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-01 07:42:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:42:51,342 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-01 07:42:51,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:42:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-01 07:42:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:42:51,343 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:51,343 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:51,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:42:51,343 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2050700910, now seen corresponding path program 1 times [2021-05-01 07:42:51,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:51,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214670118] [2021-05-01 07:42:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:51,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:42:51,381 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= |v_main_#t~nondet8_7| 2147483647) (< v_main_~i~0_12 v_main_~n~0_8) (<= 0 (+ |v_main_#t~nondet8_7| 2147483648)) (not (= |v_main_#t~nondet8_7| 0))) InVars {main_~i~0=v_main_~i~0_12, main_~n~0=v_main_~n~0_8, main_#t~nondet8=|v_main_#t~nondet8_7|} OutVars{main_~i~0=v_main_~i~0_12, main_~n~0=v_main_~n~0_8, main_#t~nondet8=|v_main_#t~nondet8_7|} AuxVars[] AssignedVars[] [2021-05-01 07:42:51,404 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:42:51,419 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,424 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,428 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,433 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,437 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,440 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,449 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,452 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,463 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,466 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,466 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:51,474 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:51,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,478 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:42:51,481 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,485 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,488 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,491 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,493 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,495 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,498 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,502 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,509 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:51,512 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,514 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,517 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:42:51,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:42:51,574 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:42:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:51,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:51,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:42:51,651 INFO L142 QuantifierPusher]: treesize reduction 151, result has 20.9 percent of original size [2021-05-01 07:42:51,652 INFO L147 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size 20 [2021-05-01 07:42:51,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:51,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:51,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:42:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:51,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:42:51,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:51,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:51,747 INFO L147 QuantifierPusher]: treesize reduction 19, result has 77.9 percent of original size 67 [2021-05-01 07:42:51,895 INFO L142 QuantifierPusher]: treesize reduction 8, result has 87.7 percent of original size [2021-05-01 07:42:51,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 07:42:51,948 INFO L142 QuantifierPusher]: treesize reduction 19, result has 56.8 percent of original size [2021-05-01 07:42:51,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:51,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:51,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:51,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:51,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:51,973 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:42:51,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214670118] [2021-05-01 07:42:51,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [214670118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:42:51,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:42:51,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 07:42:51,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092128920] [2021-05-01 07:42:51,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 07:42:51,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:42:51,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 07:42:51,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-01 07:42:51,977 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:42:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:42:52,331 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-05-01 07:42:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 07:42:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-01 07:42:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:42:52,332 INFO L225 Difference]: With dead ends: 19 [2021-05-01 07:42:52,332 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 07:42:52,334 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 469.1ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:42:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 07:42:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 07:42:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-01 07:42:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 07:42:52,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-01 07:42:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:42:52,335 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 07:42:52,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:42:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 07:42:52,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 07:42:52,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:42:52,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-01 07:42:52,631 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2021-05-01 07:42:52,631 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2021-05-01 07:42:52,631 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2021-05-01 07:42:52,631 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-01 07:42:52,631 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#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|)) [2021-05-01 07:42:52,631 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2021-05-01 07:42:52,632 INFO L198 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-05-01 07:42:52,632 INFO L198 CegarLoopUtils]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2021-05-01 07:42:52,632 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L194 CegarLoopUtils]: At program point L27(lines 27 30) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-05-01 07:42:52,632 INFO L194 CegarLoopUtils]: At program point L27-2(lines 25 31) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2021-05-01 07:42:52,632 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-01 07:42:52,633 INFO L194 CegarLoopUtils]: At program point L25-2(lines 25 31) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-05-01 07:42:52,633 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2021-05-01 07:42:52,633 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2021-05-01 07:42:52,633 INFO L194 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 07:42:52,633 INFO L194 CegarLoopUtils]: At program point L13(lines 13 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-01 07:42:52,633 INFO L194 CegarLoopUtils]: At program point L13-2(lines 12 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-01 07:42:52,633 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 12 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-01 07:42:52,633 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 07:42:52,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:42:52 BoogieIcfgContainer [2021-05-01 07:42:52,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:42:52,644 INFO L168 Benchmark]: Toolchain (without parser) took 2454.53 ms. Allocated memory was 189.8 MB in the beginning and 237.0 MB in the end (delta: 47.2 MB). Free memory was 155.6 MB in the beginning and 176.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 92.5 MB. Max. memory is 8.0 GB. [2021-05-01 07:42:52,644 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory is still 172.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:42:52,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.67 ms. Allocated memory is still 189.8 MB. Free memory was 155.4 MB in the beginning and 145.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:42:52,645 INFO L168 Benchmark]: Boogie Preprocessor took 48.71 ms. Allocated memory is still 189.8 MB. Free memory was 145.9 MB in the beginning and 173.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-05-01 07:42:52,645 INFO L168 Benchmark]: RCFGBuilder took 262.93 ms. Allocated memory is still 189.8 MB. Free memory was 173.0 MB in the beginning and 159.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:42:52,646 INFO L168 Benchmark]: TraceAbstraction took 1967.82 ms. Allocated memory was 189.8 MB in the beginning and 237.0 MB in the end (delta: 47.2 MB). Free memory was 158.9 MB in the beginning and 176.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 96.7 MB. Max. memory is 8.0 GB. [2021-05-01 07:42:52,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory is still 172.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 168.67 ms. Allocated memory is still 189.8 MB. Free memory was 155.4 MB in the beginning and 145.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.71 ms. Allocated memory is still 189.8 MB. Free memory was 145.9 MB in the beginning and 173.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 262.93 ms. Allocated memory is still 189.8 MB. Free memory was 173.0 MB in the beginning and 159.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1967.82 ms. Allocated memory was 189.8 MB in the beginning and 237.0 MB in the end (delta: 47.2 MB). Free memory was 158.9 MB in the beginning and 176.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 96.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1607.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 661.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 295.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 45 SDslu, 42 SDs, 0 SdLazy, 112 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 138.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 642.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 39 PreInvPairs, 60 NumberOfFragments, 97 HoareAnnotationTreeSize, 39 FomulaSimplifications, 383 FormulaSimplificationTreeSizeReduction, 97.9ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 805 FormulaSimplificationTreeSizeReductionInter, 182.7ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i <= 3 * (i / 3) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...