/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/loop-acceleration/overflow_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:06:46,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:06:46,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:06:46,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:06:46,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:06:46,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:06:46,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:06:46,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:06:46,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:06:46,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:06:46,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:06:46,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:06:46,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:06:46,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:06:46,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:06:46,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:06:46,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:06:46,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:06:46,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:06:46,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:06:46,408 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 07:06:46,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:06:46,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:06:46,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:06:46,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:06:46,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:06:46,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:06:46,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:06:46,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:06:46,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:06:46,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:06:46,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:06:46,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:06:46,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:06:46,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:06:46,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:06:46,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:06:46,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:06:46,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:06:46,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:06:46,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:06:46,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:06:46,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:06:46,462 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:06:46,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:06:47,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:06:47,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:06:47,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:06:47,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:06:47,061 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:06:47,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/overflow_1-1.c [2021-05-01 07:06:47,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d090575b5/9645c963f5544e3b8fcf128fea350520/FLAG25b6364f0 [2021-05-01 07:06:47,982 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:06:47,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/overflow_1-1.c [2021-05-01 07:06:47,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d090575b5/9645c963f5544e3b8fcf128fea350520/FLAG25b6364f0 [2021-05-01 07:06:48,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d090575b5/9645c963f5544e3b8fcf128fea350520 [2021-05-01 07:06:48,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:06:48,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:06:48,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:06:48,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:06:48,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:06:48,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc40c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48, skipping insertion in model container [2021-05-01 07:06:48,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:06:48,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:06:48,630 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/overflow_1-1.c[324,337] [2021-05-01 07:06:48,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:06:48,681 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:06:48,698 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/overflow_1-1.c[324,337] [2021-05-01 07:06:48,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:06:48,724 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:06:48,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48 WrapperNode [2021-05-01 07:06:48,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:06:48,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:06:48,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:06:48,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:06:48,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (1/1) ... [2021-05-01 07:06:48,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:06:48,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:06:48,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:06:48,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:06:48,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (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 07:06:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:06:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:06:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:06:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:06:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:06:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:06:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:06:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:06:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:06:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:06:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:06:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:06:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:06:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:06:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:06:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:06:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:06:49,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:06:49,300 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 07:06:49,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:06:49 BoogieIcfgContainer [2021-05-01 07:06:49,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:06:49,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:06:49,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:06:49,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:06:49,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:06:48" (1/3) ... [2021-05-01 07:06:49,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe66363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:06:49, skipping insertion in model container [2021-05-01 07:06:49,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:06:48" (2/3) ... [2021-05-01 07:06:49,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe66363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:06:49, skipping insertion in model container [2021-05-01 07:06:49,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:06:49" (3/3) ... [2021-05-01 07:06:49,322 INFO L111 eAbstractionObserver]: Analyzing ICFG overflow_1-1.c [2021-05-01 07:06:49,336 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:06:49,343 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:06:49,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:06:49,414 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:06:49,414 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:06:49,415 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:06:49,415 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:06:49,415 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:06:49,415 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:06:49,415 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:06:49,415 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:06:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 07:06:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 07:06:49,460 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:06:49,462 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:06:49,463 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:06:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:06:49,474 INFO L82 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2021-05-01 07:06:49,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:06:49,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750097758] [2021-05-01 07:06:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:06:49,588 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:06:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:06:49,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:49,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:49,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:49,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:06:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:06:49,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:49,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:49,985 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 07:06:49,988 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:06:49,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750097758] [2021-05-01 07:06:49,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1750097758] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:06:49,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:06:49,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 07:06:49,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644325675] [2021-05-01 07:06:50,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 07:06:50,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:06:50,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 07:06:50,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 07:06:50,057 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 07:06:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:06:50,201 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-05-01 07:06:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 07:06:50,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2021-05-01 07:06:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:06:50,216 INFO L225 Difference]: With dead ends: 29 [2021-05-01 07:06:50,217 INFO L226 Difference]: Without dead ends: 12 [2021-05-01 07:06:50,224 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 07:06:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-01 07:06:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-01 07:06:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 07:06:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-01 07:06:50,307 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-01 07:06:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:06:50,309 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-01 07:06:50,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 07:06:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-01 07:06:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 07:06:50,313 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:06:50,314 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:06:50,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:06:50,315 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:06:50,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:06:50,317 INFO L82 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2021-05-01 07:06:50,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:06:50,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254350137] [2021-05-01 07:06:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:06:50,334 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:06:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:06:50,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:50,464 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-05-01 07:06:50,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:06:50,493 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-05-01 07:06:50,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:50,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:06:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:06:50,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:50,550 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 07:06:50,551 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:06:50,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254350137] [2021-05-01 07:06:50,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [254350137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:06:50,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:06:50,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 07:06:50,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330542503] [2021-05-01 07:06:50,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 07:06:50,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:06:50,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 07:06:50,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 07:06:50,588 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 07:06:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:06:50,671 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-01 07:06:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 07:06:50,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2021-05-01 07:06:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:06:50,673 INFO L225 Difference]: With dead ends: 18 [2021-05-01 07:06:50,674 INFO L226 Difference]: Without dead ends: 13 [2021-05-01 07:06:50,675 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 07:06:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-01 07:06:50,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-01 07:06:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 07:06:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-01 07:06:50,686 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-01 07:06:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:06:50,686 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-01 07:06:50,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 07:06:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-01 07:06:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 07:06:50,687 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:06:50,688 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:06:50,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:06:50,688 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:06:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:06:50,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2021-05-01 07:06:50,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:06:50,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530847748] [2021-05-01 07:06:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:06:50,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 07:06:50,752 INFO L181 rdanLoopAcceleration]: Guard: Formula: (<= 10 (mod v_main_~x~0_8 4294967296)) InVars {main_~x~0=v_main_~x~0_8} OutVars{main_~x~0=v_main_~x~0_8} AuxVars[] AssignedVars[] [2021-05-01 07:06:50,769 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.5 percent of original size [2021-05-01 07:06:50,784 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,791 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,799 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,803 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:50,905 INFO L108 tifierPushTermWalker]: treesize reduction 13, result has 7.1 percent of original size [2021-05-01 07:06:50,990 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:06:51,063 INFO L108 tifierPushTermWalker]: treesize reduction 13, result has 7.1 percent of original size [2021-05-01 07:06:51,081 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,100 INFO L108 tifierPushTermWalker]: treesize reduction 28, result has 3.4 percent of original size [2021-05-01 07:06:51,104 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:06:51,129 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,153 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,178 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,194 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,203 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.5 percent of original size 58 [2021-05-01 07:06:51,310 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:06:51,328 INFO L142 QuantifierPusher]: treesize reduction 8, result has 90.8 percent of original size [2021-05-01 07:06:51,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 07:06:51,334 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:06:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:06:51,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:51,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:06:51,587 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-05-01 07:06:51,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:06:51,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-05-01 07:06:51,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:06:51,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:06:51,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:06:51,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:51,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:06:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:06:51,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:51,789 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 07:06:51,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:06:51,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:51,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 07:06:51,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 07:06:54,482 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_9 Int)) (and (or (let ((.cse0 (div (+ (* c_main_~x~0 (- 1)) v_main_~x~0_9) (- 2)))) (and (< (mod (+ (* .cse0 2) v_main_~x~0_9) 4294967296) 10) (= (mod (+ c_main_~x~0 v_main_~x~0_9) (- 2)) 0) (let ((.cse1 (* v_main_~x~0_9 (- 1)))) (<= (div (+ .cse1 (div (+ v_main_~x~0_9 (- 1)) 2) (* .cse0 (- 1)) 1) (- 2147483648)) (+ (div (+ v_main_~x~0_9 (* (div (+ .cse1 (- 10)) (- 2)) (- 1)) 1) 2147483648) 1))) (< 0 .cse0) (<= 10 (mod v_main_~x~0_9 4294967296)))) (= v_main_~x~0_9 c_main_~x~0)) (<= 10 v_main_~x~0_9) (<= v_main_~x~0_9 10))) is different from true [2021-05-01 07:06:54,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:06:54,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:54,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 07:06:54,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:06:54,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:06:54,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:06:54,780 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:06:54,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530847748] [2021-05-01 07:06:54,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1530847748] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:06:54,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:06:54,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 07:06:54,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368348818] [2021-05-01 07:06:54,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 07:06:54,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:06:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 07:06:54,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=53, Unknown=1, NotChecked=14, Total=90 [2021-05-01 07:06:54,784 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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 07:06:57,317 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2021-05-01 07:07:01,801 WARN L205 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 81 [2021-05-01 07:07:04,576 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 07:07:04,845 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:07:05,072 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-01 07:07:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:05,074 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-05-01 07:07:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 07:07:05,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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 07:07:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:05,076 INFO L225 Difference]: With dead ends: 17 [2021-05-01 07:07:05,076 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 07:07:05,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 10515.9ms TimeCoverageRelationStatistics Valid=50, Invalid=133, Unknown=3, NotChecked=24, Total=210 [2021-05-01 07:07:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 07:07:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 07:07:05,077 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 07:07:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 07:07:05,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-01 07:07:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:05,078 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 07:07:05,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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 07:07:05,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 07:07:05,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 07:07:05,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:07:05,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-01 07:07:05,444 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-01 07:07:13,344 WARN L205 SmtUtils]: Spent 7.88 s on a formula simplification. DAG size of input: 96 DAG size of output: 5 [2021-05-01 07:07:13,569 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 7 [2021-05-01 07:07:13,617 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-01 07:07:13,617 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-01 07:07:13,617 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-01 07:07:13,617 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-01 07:07:13,618 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)|) (= |#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 07:07:13,618 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-01 07:07:13,618 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-01 07:07:13,618 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-01 07:07:13,618 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-01 07:07:13,619 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-01 07:07:13,619 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 12 20) the Hoare annotation is: true [2021-05-01 07:07:13,619 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 12 20) the Hoare annotation is: true [2021-05-01 07:07:13,619 INFO L194 CegarLoopUtils]: At program point L15-2(lines 15 17) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-05-01 07:07:13,619 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 12 20) the Hoare annotation is: true [2021-05-01 07:07:13,619 INFO L194 CegarLoopUtils]: At program point L15-3(lines 15 17) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-05-01 07:07:13,619 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-01 07:07:13,620 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-05-01 07:07:13,620 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 07:07:13,620 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-01 07:07:13,621 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-05-01 07:07:13,621 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 07:07:13,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:07:13 BoogieIcfgContainer [2021-05-01 07:07:13,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:07:13,642 INFO L168 Benchmark]: Toolchain (without parser) took 25273.50 ms. Allocated memory was 204.5 MB in the beginning and 264.2 MB in the end (delta: 59.8 MB). Free memory was 170.1 MB in the beginning and 187.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 43.2 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:13,649 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 204.5 MB. Free memory is still 186.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:07:13,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.75 ms. Allocated memory is still 204.5 MB. Free memory was 169.9 MB in the beginning and 160.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:13,650 INFO L168 Benchmark]: Boogie Preprocessor took 42.56 ms. Allocated memory is still 204.5 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:13,653 INFO L168 Benchmark]: RCFGBuilder took 531.48 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 176.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:13,654 INFO L168 Benchmark]: TraceAbstraction took 24330.86 ms. Allocated memory was 204.5 MB in the beginning and 264.2 MB in the end (delta: 59.8 MB). Free memory was 176.2 MB in the beginning and 187.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:13,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 204.5 MB. Free memory is still 186.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.75 ms. Allocated memory is still 204.5 MB. Free memory was 169.9 MB in the beginning and 160.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.56 ms. Allocated memory is still 204.5 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 531.48 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 176.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24330.86 ms. Allocated memory was 204.5 MB in the beginning and 264.2 MB in the end (delta: 59.8 MB). Free memory was 176.2 MB in the beginning and 187.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15669.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 27.4ms, AutomataDifference: 10616.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 8536.6ms, InitialAbstractionConstructionTime: 21.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 20 SDslu, 31 SDs, 0 SdLazy, 36 SolverSat, 15 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2305.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 10717.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 18 LocationsWithAnnotation, 36 PreInvPairs, 49 NumberOfFragments, 71 HoareAnnotationTreeSize, 36 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 132.2ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 559 FormulaSimplificationTreeSizeReductionInter, 8385.3ms 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: 15]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...