/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:29:22,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:29:22,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:29:22,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:29:22,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:29:22,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:29:22,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:29:22,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:29:22,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:29:22,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:29:22,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:29:22,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:29:22,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:29:22,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:29:22,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:29:22,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:29:22,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:29:22,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:29:22,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:29:22,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:29:22,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:29:22,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:29:22,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:29:22,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:29:22,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:29:22,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:29:22,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:29:22,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:29:22,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:29:22,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:29:22,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:29:22,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:29:22,672 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:29:22,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:29:22,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:29:22,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:29:22,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:29:22,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:29:22,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:29:22,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:29:22,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:29:22,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:29:22,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:29:22,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:29:22,677 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:29:22,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:29:22,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:29:22,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:29:22,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:29:22,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:29:22,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:29:22,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:29:23,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:29:23,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:29:23,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:29:23,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:29:23,254 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:29:23,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2021-02-21 21:29:23,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267448823/31c8997f9c4f4c229a1b4b0f7f2b324d/FLAGa9cb7840c [2021-02-21 21:29:24,226 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:29:24,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2021-02-21 21:29:24,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267448823/31c8997f9c4f4c229a1b4b0f7f2b324d/FLAGa9cb7840c [2021-02-21 21:29:24,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267448823/31c8997f9c4f4c229a1b4b0f7f2b324d [2021-02-21 21:29:24,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:29:24,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:29:24,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:24,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:29:24,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:29:24,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:24" (1/1) ... [2021-02-21 21:29:24,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467cc3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:24, skipping insertion in model container [2021-02-21 21:29:24,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:24" (1/1) ... [2021-02-21 21:29:24,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:29:24,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:29:24,969 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-02-21 21:29:24,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:25,006 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:29:25,026 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-02-21 21:29:25,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:25,053 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:29:25,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25 WrapperNode [2021-02-21 21:29:25,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:25,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:29:25,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:29:25,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:29:25,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:29:25,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:29:25,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:29:25,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:29:25,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (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 21:29:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:29:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:29:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:29:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:29:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:29:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:29:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:29:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:29:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:29:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:29:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:29:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:29:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:29:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:29:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:29:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:29:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:29:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:29:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:29:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:29:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:29:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:29:25,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:29:25,636 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:29:25,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:25 BoogieIcfgContainer [2021-02-21 21:29:25,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:29:25,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:29:25,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:29:25,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:29:25,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:29:24" (1/3) ... [2021-02-21 21:29:25,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42802eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:25, skipping insertion in model container [2021-02-21 21:29:25,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (2/3) ... [2021-02-21 21:29:25,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42802eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:25, skipping insertion in model container [2021-02-21 21:29:25,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:25" (3/3) ... [2021-02-21 21:29:25,654 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2021-02-21 21:29:25,664 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:29:25,672 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:29:25,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:29:25,758 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:29:25,758 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:29:25,759 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:29:25,759 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:29:25,760 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:29:25,760 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:29:25,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:29:25,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:29:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-21 21:29:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 21:29:25,807 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:25,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:25,809 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:25,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1564133724, now seen corresponding path program 1 times [2021-02-21 21:29:25,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:25,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600621927] [2021-02-21 21:29:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:26,076 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:26,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:26,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:26,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:26,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:26,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:26,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:26,422 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 21:29:26,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600621927] [2021-02-21 21:29:26,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:26,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:29:26,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902841967] [2021-02-21 21:29:26,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:29:26,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:26,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:29:26,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:26,490 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2021-02-21 21:29:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:26,610 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2021-02-21 21:29:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:29:26,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-02-21 21:29:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:26,626 INFO L225 Difference]: With dead ends: 57 [2021-02-21 21:29:26,626 INFO L226 Difference]: Without dead ends: 35 [2021-02-21 21:29:26,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-21 21:29:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-21 21:29:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-21 21:29:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-02-21 21:29:26,752 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2021-02-21 21:29:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:26,753 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-02-21 21:29:26,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:29:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-02-21 21:29:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 21:29:26,756 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:26,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:26,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:29:26,758 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1277842214, now seen corresponding path program 1 times [2021-02-21 21:29:26,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:26,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268897417] [2021-02-21 21:29:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:26,779 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:26,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:26,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:27,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:29:27,023 WARN L141 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-02-21 21:29:27,025 WARN L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-02-21 21:29:27,052 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-02-21 21:29:27,055 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-02-21 21:29:27,084 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 21:29:27,086 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 21:29:27,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:27,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:27,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:27,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:27,225 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 21:29:27,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268897417] [2021-02-21 21:29:27,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:27,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:29:27,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462108776] [2021-02-21 21:29:27,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:29:27,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:27,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:29:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:29:27,231 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 9 states. [2021-02-21 21:29:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:27,719 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-02-21 21:29:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:29:27,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-02-21 21:29:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:27,722 INFO L225 Difference]: With dead ends: 44 [2021-02-21 21:29:27,722 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 21:29:27,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-02-21 21:29:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 21:29:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-02-21 21:29:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-21 21:29:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-02-21 21:29:27,742 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 28 [2021-02-21 21:29:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:27,742 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-02-21 21:29:27,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:29:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-02-21 21:29:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 21:29:27,744 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:27,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:27,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:29:27,745 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:27,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:27,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2110274610, now seen corresponding path program 1 times [2021-02-21 21:29:27,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:27,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023799056] [2021-02-21 21:29:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:29,881 WARN L141 QuantifierPusher]: treesize reduction 24, result has 76.7 percent of original size [2021-02-21 21:29:29,921 WARN L147 QuantifierPusher]: treesize reduction 24, result has 76.7 percent of original size 79 [2021-02-21 21:29:31,995 WARN L141 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size [2021-02-21 21:29:32,003 WARN L147 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size 72 [2021-02-21 21:29:32,004 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:32,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:32,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:29:32,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:29:32,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 21:29:32,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:29:32,207 WARN L141 QuantifierPusher]: treesize reduction 23, result has 67.6 percent of original size [2021-02-21 21:29:32,210 WARN L147 QuantifierPusher]: treesize reduction 23, result has 67.6 percent of original size 48 [2021-02-21 21:29:32,271 WARN L141 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size [2021-02-21 21:29:32,276 WARN L147 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size 37 [2021-02-21 21:29:32,333 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-21 21:29:32,334 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-21 21:29:32,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:32,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:32,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:32,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:32,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:32,431 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 21:29:32,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:32,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-02-21 21:29:32,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-02-21 21:29:32,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:32,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-02-21 21:29:32,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-02-21 21:29:32,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-21 21:29:32,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:29:32,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:29:32,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:29:32,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:29:32,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-21 21:29:32,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:29:32,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:32,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023799056] [2021-02-21 21:29:32,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:32,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 21:29:32,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023351810] [2021-02-21 21:29:32,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 21:29:32,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:32,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 21:29:32,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:29:32,862 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 17 states. [2021-02-21 21:29:33,453 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-02-21 21:29:33,973 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-02-21 21:29:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:34,263 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-02-21 21:29:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-21 21:29:34,264 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2021-02-21 21:29:34,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:34,269 INFO L225 Difference]: With dead ends: 51 [2021-02-21 21:29:34,270 INFO L226 Difference]: Without dead ends: 45 [2021-02-21 21:29:34,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 21:29:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-21 21:29:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2021-02-21 21:29:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-21 21:29:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-02-21 21:29:34,287 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 35 [2021-02-21 21:29:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:34,288 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-02-21 21:29:34,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 21:29:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-02-21 21:29:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:29:34,290 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:34,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:34,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:29:34,291 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:34,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2098084314, now seen corresponding path program 2 times [2021-02-21 21:29:34,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:34,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110541686] [2021-02-21 21:29:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:36,372 WARN L141 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size [2021-02-21 21:29:36,382 WARN L147 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size 72 [2021-02-21 21:29:38,454 WARN L141 QuantifierPusher]: treesize reduction 24, result has 76.7 percent of original size [2021-02-21 21:29:38,460 WARN L147 QuantifierPusher]: treesize reduction 24, result has 76.7 percent of original size 79 [2021-02-21 21:29:38,461 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:40,592 WARN L141 QuantifierPusher]: treesize reduction 58, result has 62.3 percent of original size [2021-02-21 21:29:40,600 WARN L147 QuantifierPusher]: treesize reduction 58, result has 62.3 percent of original size 96 [2021-02-21 21:29:42,706 WARN L141 QuantifierPusher]: treesize reduction 69, result has 52.7 percent of original size [2021-02-21 21:29:42,712 WARN L147 QuantifierPusher]: treesize reduction 69, result has 52.7 percent of original size 77 [2021-02-21 21:29:42,713 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:42,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:42,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:29:42,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:29:42,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:29:42,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 21:29:42,837 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-02-21 21:29:42,839 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size 29 [2021-02-21 21:29:42,864 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-02-21 21:29:42,865 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-02-21 21:29:42,887 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 21:29:42,889 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 21:29:42,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:42,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:42,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:42,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:42,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:42,982 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 21:29:42,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:42,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-02-21 21:29:42,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-02-21 21:29:42,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:43,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-02-21 21:29:43,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-02-21 21:29:43,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:29:43,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 21:29:43,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 21:29:43,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 21:29:43,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:29:43,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:29:43,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:29:43,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:29:43,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 21:29:43,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 21:29:43,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 21:29:43,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:29:43,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:29:43,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:29:43,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:43,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:43,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110541686] [2021-02-21 21:29:43,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:43,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 21:29:43,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330395716] [2021-02-21 21:29:43,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 21:29:43,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:43,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 21:29:43,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-02-21 21:29:43,378 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 16 states. [2021-02-21 21:29:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:44,652 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-02-21 21:29:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 21:29:44,653 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2021-02-21 21:29:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:44,654 INFO L225 Difference]: With dead ends: 43 [2021-02-21 21:29:44,654 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:29:44,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2021-02-21 21:29:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:29:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:29:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:29:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:29:44,658 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-02-21 21:29:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:44,658 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:29:44,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 21:29:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:29:44,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:29:44,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:29:44,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:29:44,991 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 20 [2021-02-21 21:29:45,196 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 26 [2021-02-21 21:29:45,769 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:29:45,769 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:29:45,769 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:29:45,770 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:29:45,770 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:29:45,770 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:45,770 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:45,770 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:29:45,771 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:29:45,771 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:29:45,771 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:29:45,771 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-21 21:29:45,771 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:29:45,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:29:45,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:29:45,772 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:45,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:29:45,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:29:45,772 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:29:45,772 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:29:45,773 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:45,773 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:45,773 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:45,773 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~y~0)) (.cse1 (+ main_~x~0 main_~j~0 1))) (and (<= 0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 .cse0) (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (<= .cse0 .cse1))) [2021-02-21 21:29:45,774 INFO L185 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~y~0)) (.cse1 (+ main_~x~0 main_~j~0 1))) (and (<= 0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 .cse0) (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (= |main_#t~post6| main_~y~0) (<= .cse0 .cse1))) [2021-02-21 21:29:45,774 INFO L185 CegarLoopUtils]: At program point L33-2(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= 0 main_~j~0) (<= main_~j~0 .cse1) (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (= |main_#t~post6| (+ main_~y~0 1)) (<= .cse1 .cse0))) [2021-02-21 21:29:45,774 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0)) [2021-02-21 21:29:45,774 INFO L185 CegarLoopUtils]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= 0 main_~j~0) (<= .cse0 .cse1) (<= main_~j~0 .cse0) (<= .cse1 .cse0) (<= 0 main_~i~0))) [2021-02-21 21:29:45,775 INFO L185 CegarLoopUtils]: At program point L31-3(lines 24 39) the Hoare annotation is: (let ((.cse5 (<= main_~y~0 0)) (.cse7 (+ main_~x~0 main_~j~0)) (.cse6 (+ main_~i~0 main_~y~0))) (let ((.cse3 (<= .cse7 .cse6)) (.cse1 (or (<= .cse6 main_~j~0) .cse5)) (.cse2 (<= main_~j~0 .cse6)) (.cse0 (<= .cse6 .cse7))) (or (and (<= 0 main_~j~0) .cse0 .cse1 .cse2 .cse3 (<= 0 main_~i~0)) (let ((.cse4 (< 0 (+ main_~y~0 1)))) (and (or .cse3 .cse4) .cse1 (or .cse2 .cse4) (or .cse0 .cse5) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)))))) [2021-02-21 21:29:45,775 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-21 21:29:45,775 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-21 21:29:45,775 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-21 21:29:45,776 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-21 21:29:45,776 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 39) the Hoare annotation is: true [2021-02-21 21:29:45,776 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 39) the Hoare annotation is: true [2021-02-21 21:29:45,776 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (let ((.cse2 (<= main_~y~0 0)) (.cse3 (< 0 (+ main_~y~0 1)))) (or (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= 0 main_~j~0) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= 0 main_~x~0) .cse2 .cse3)) (and .cse2 (<= main_~i~0 main_~x~0) .cse3 (<= main_~x~0 main_~i~0)))) [2021-02-21 21:29:45,777 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= 0 main_~j~0) (<= .cse0 .cse1) (<= main_~j~0 .cse0) (<= .cse1 .cse0) (<= 0 main_~i~0) (not (= main_~x~0 0)))) [2021-02-21 21:29:45,777 INFO L185 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (= |main_#t~post5| main_~x~0) (<= 0 main_~j~0) (<= .cse0 .cse1) (<= main_~j~0 .cse0) (<= .cse1 .cse0) (<= 0 main_~i~0) (not (= main_~x~0 0)))) [2021-02-21 21:29:45,777 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2021-02-21 21:29:45,777 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~j~0 |main_#t~post5|))) (and (= |main_#t~post5| (+ main_~x~0 1)) (<= 0 main_~j~0) (<= .cse0 .cse1) (<= main_~j~0 .cse1) (<= 0 main_~i~0) (<= .cse1 .cse0) (not (= |main_#t~post5| 0)))) [2021-02-21 21:29:45,777 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2021-02-21 21:29:45,778 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-21 21:29:45,778 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-21 21:29:45,778 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:29:45,778 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-21 21:29:45,778 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-21 21:29:45,779 INFO L192 CegarLoopUtils]: At program point L35(lines 35 37) the Hoare annotation is: true [2021-02-21 21:29:45,779 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:45,779 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:45,779 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:45,779 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:45,780 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:45,780 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:29:45,780 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:45,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:29:45 BoogieIcfgContainer [2021-02-21 21:29:45,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:29:45,810 INFO L168 Benchmark]: Toolchain (without parser) took 21220.26 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 140.2 MB in the beginning and 122.7 MB in the end (delta: 17.6 MB). Peak memory consumption was 108.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:45,810 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 162.5 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:29:45,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.42 ms. Allocated memory is still 162.5 MB. Free memory was 139.2 MB in the beginning and 129.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:45,812 INFO L168 Benchmark]: Boogie Preprocessor took 56.99 ms. Allocated memory is still 162.5 MB. Free memory was 129.5 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:45,812 INFO L168 Benchmark]: RCFGBuilder took 524.74 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 143.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:45,813 INFO L168 Benchmark]: TraceAbstraction took 20166.16 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.6 MB in the beginning and 122.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 110.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:45,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 162.5 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.42 ms. Allocated memory is still 162.5 MB. Free memory was 139.2 MB in the beginning and 129.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.99 ms. Allocated memory is still 162.5 MB. Free memory was 129.5 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 524.74 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 143.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20166.16 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.6 MB in the beginning and 122.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 110.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 31]: Loop Invariant Derived loop invariant: (((0 <= j && i + y <= x + j) && j <= i + y) && x + j <= i + y) && 0 <= i - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 184 SDslu, 262 SDs, 0 SdLazy, 523 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 65 PreInvPairs, 90 NumberOfFragments, 456 HoareAnnotationTreeSize, 65 FomulaSimplifications, 1051 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 44 FomulaSimplificationsInter, 1066 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...