/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/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:07:34,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:07:34,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:07:34,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:07:34,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:07:34,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:07:34,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:07:34,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:07:34,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:07:34,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:07:34,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:07:34,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:07:34,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:07:34,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:07:34,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:07:34,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:07:34,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:07:34,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:07:34,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:07:34,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:07:34,385 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 07:07:34,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:07:34,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:07:34,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:07:34,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:07:34,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:07:34,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:07:34,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:07:34,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:07:34,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:07:34,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:07:34,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:07:34,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:07:34,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:07:34,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:07:34,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:07:34,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:07:34,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:07:34,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:07:34,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:07:34,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:07:34,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:07:34,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:07:34,405 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:07:34,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:07:34,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:07:34,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:07:34,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:07:34,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:07:34,674 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:07:34,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2021-05-01 07:07:34,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b856f9a/2b21a00664bb4080b0dc739b08de89a6/FLAGf6896b1d5 [2021-05-01 07:07:35,085 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:07:35,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2021-05-01 07:07:35,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b856f9a/2b21a00664bb4080b0dc739b08de89a6/FLAGf6896b1d5 [2021-05-01 07:07:35,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b856f9a/2b21a00664bb4080b0dc739b08de89a6 [2021-05-01 07:07:35,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:07:35,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:07:35,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:07:35,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:07:35,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:07:35,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f71769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35, skipping insertion in model container [2021-05-01 07:07:35,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:07:35,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:07:35,259 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/underapprox_2-2.c[327,340] [2021-05-01 07:07:35,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:07:35,278 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:07:35,332 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/underapprox_2-2.c[327,340] [2021-05-01 07:07:35,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:07:35,347 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:07:35,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35 WrapperNode [2021-05-01 07:07:35,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:07:35,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:07:35,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:07:35,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:07:35,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (1/1) ... [2021-05-01 07:07:35,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:07:35,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:07:35,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:07:35,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:07:35,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (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 07:07:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:07:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:07:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:07:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:07:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:07:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:07:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:07:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:07:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:07:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:07:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:07:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:07:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:07:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:07:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:07:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:07:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:07:35,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:07:35,679 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 07:07:35,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:07:35 BoogieIcfgContainer [2021-05-01 07:07:35,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:07:35,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:07:35,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:07:35,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:07:35,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:07:35" (1/3) ... [2021-05-01 07:07:35,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17040410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:07:35, skipping insertion in model container [2021-05-01 07:07:35,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:07:35" (2/3) ... [2021-05-01 07:07:35,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17040410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:07:35, skipping insertion in model container [2021-05-01 07:07:35,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:07:35" (3/3) ... [2021-05-01 07:07:35,688 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2021-05-01 07:07:35,692 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:07:35,695 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:07:35,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:07:35,727 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:07:35,727 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:07:35,727 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:07:35,727 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:07:35,727 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:07:35,727 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:07:35,727 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:07:35,728 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:07:35,736 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 07:07:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 07:07:35,741 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:35,741 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:35,742 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2021-05-01 07:07:35,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:35,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966466429] [2021-05-01 07:07:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:35,789 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:35,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:35,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:35,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:35,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:35,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:35,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:35,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:35,888 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 07:07:35,889 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:35,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966466429] [2021-05-01 07:07:35,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [966466429] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:35,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:35,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 07:07:35,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195688021] [2021-05-01 07:07:35,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 07:07:35,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:35,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 07:07:35,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 07:07:35,903 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 07:07:35,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:35,941 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-05-01 07:07:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 07:07:35,942 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 07:07:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:35,946 INFO L225 Difference]: With dead ends: 29 [2021-05-01 07:07:35,946 INFO L226 Difference]: Without dead ends: 12 [2021-05-01 07:07:35,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 07:07:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-01 07:07:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-01 07:07:35,970 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 07:07:35,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-01 07:07:35,971 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-01 07:07:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:35,972 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-01 07:07:35,972 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 07:07:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-01 07:07:35,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 07:07:35,973 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:35,973 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:35,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:07:35,973 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:35,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:35,974 INFO L82 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2021-05-01 07:07:35,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:35,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034532602] [2021-05-01 07:07:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:35,977 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:07:36,024 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 07:07:36,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:07:36,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,071 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 07:07:36,071 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:36,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034532602] [2021-05-01 07:07:36,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2034532602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:36,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:36,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 07:07:36,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160304390] [2021-05-01 07:07:36,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 07:07:36,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:36,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 07:07:36,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 07:07:36,074 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 07:07:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:36,140 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-01 07:07:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 07:07:36,140 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 07:07:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:36,141 INFO L225 Difference]: With dead ends: 18 [2021-05-01 07:07:36,141 INFO L226 Difference]: Without dead ends: 13 [2021-05-01 07:07:36,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 07:07:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-01 07:07:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-01 07:07:36,146 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 07:07:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-01 07:07:36,147 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-01 07:07:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:36,147 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-01 07:07:36,147 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 07:07:36,147 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-01 07:07:36,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 07:07:36,148 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:36,148 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:36,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:07:36,148 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:36,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2021-05-01 07:07:36,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:36,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656169682] [2021-05-01 07:07:36,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:36,166 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2021-05-01 07:07:36,169 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:07:36,225 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-05-01 07:07:36,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:07:36,250 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-05-01 07:07:36,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,314 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 07:07:36,314 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:36,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656169682] [2021-05-01 07:07:36,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1656169682] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:36,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:36,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 07:07:36,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270040579] [2021-05-01 07:07:36,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 07:07:36,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:36,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 07:07:36,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-01 07:07:36,317 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:07:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:36,416 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-01 07:07:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-01 07:07:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-01 07:07:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:36,417 INFO L225 Difference]: With dead ends: 19 [2021-05-01 07:07:36,417 INFO L226 Difference]: Without dead ends: 14 [2021-05-01 07:07:36,417 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-01 07:07:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-01 07:07:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-01 07:07:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 07:07:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-01 07:07:36,421 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-01 07:07:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:36,421 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-01 07:07:36,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:07:36,421 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-01 07:07:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-01 07:07:36,422 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:36,422 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:36,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:07:36,422 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 2 times [2021-05-01 07:07:36,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:36,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965909340] [2021-05-01 07:07:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:36,438 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2021-05-01 07:07:36,440 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:07:36,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:36,490 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-05-01 07:07:36,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:07:36,517 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-05-01 07:07:36,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,546 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 07:07:36,546 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:36,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965909340] [2021-05-01 07:07:36,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [965909340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:36,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:36,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 07:07:36,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963866376] [2021-05-01 07:07:36,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 07:07:36,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:36,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 07:07:36,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-01 07:07:36,548 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 07:07:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:36,661 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-01 07:07:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 07:07:36,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 13 [2021-05-01 07:07:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:36,663 INFO L225 Difference]: With dead ends: 20 [2021-05-01 07:07:36,664 INFO L226 Difference]: Without dead ends: 15 [2021-05-01 07:07:36,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-01 07:07:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-01 07:07:36,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-01 07:07:36,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 07:07:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-01 07:07:36,687 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-01 07:07:36,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:36,688 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-01 07:07:36,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 07:07:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-01 07:07:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:07:36,689 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:36,689 INFO L519 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:36,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 07:07:36,689 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:36,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 3 times [2021-05-01 07:07:36,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:36,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201643994] [2021-05-01 07:07:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:36,697 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2021-05-01 07:07:36,699 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:07:36,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:36,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:36,753 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-05-01 07:07:36,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:07:36,770 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-05-01 07:07:36,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:36,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:36,803 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 07:07:36,803 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:36,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201643994] [2021-05-01 07:07:36,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201643994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:36,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:36,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 07:07:36,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238649822] [2021-05-01 07:07:36,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 07:07:36,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:36,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 07:07:36,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-01 07:07:36,805 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:07:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:36,932 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-01 07:07:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 07:07:36,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-01 07:07:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:36,934 INFO L225 Difference]: With dead ends: 21 [2021-05-01 07:07:36,934 INFO L226 Difference]: Without dead ends: 16 [2021-05-01 07:07:36,935 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-05-01 07:07:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-01 07:07:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-01 07:07:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:07:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-01 07:07:36,943 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-01 07:07:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:36,943 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-01 07:07:36,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:07:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-01 07:07:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 07:07:36,944 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:36,944 INFO L519 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:36,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 07:07:36,944 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:36,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:36,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 4 times [2021-05-01 07:07:36,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:36,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978808786] [2021-05-01 07:07:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:36,949 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2021-05-01 07:07:36,950 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:36,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:07:37,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,029 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-05-01 07:07:37,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:07:37,048 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-05-01 07:07:37,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:37,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,076 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 07:07:37,077 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:37,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978808786] [2021-05-01 07:07:37,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [978808786] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:37,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:37,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 07:07:37,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134594749] [2021-05-01 07:07:37,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 07:07:37,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:37,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 07:07:37,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-01 07:07:37,078 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 07:07:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:37,290 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-01 07:07:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 07:07:37,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 15 [2021-05-01 07:07:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:37,291 INFO L225 Difference]: With dead ends: 22 [2021-05-01 07:07:37,291 INFO L226 Difference]: Without dead ends: 17 [2021-05-01 07:07:37,291 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:07:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-01 07:07:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-01 07:07:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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 07:07:37,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-01 07:07:37,296 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-05-01 07:07:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:37,296 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-01 07:07:37,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 07:07:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-01 07:07:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-01 07:07:37,297 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:37,297 INFO L519 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:37,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 07:07:37,297 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 5 times [2021-05-01 07:07:37,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:37,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387432407] [2021-05-01 07:07:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:37,300 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2021-05-01 07:07:37,301 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:37,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:07:37,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,374 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-05-01 07:07:37,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:07:37,390 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-05-01 07:07:37,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:37,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,426 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 07:07:37,426 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:37,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387432407] [2021-05-01 07:07:37,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1387432407] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:37,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:37,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 07:07:37,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165559970] [2021-05-01 07:07:37,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 07:07:37,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:37,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 07:07:37,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-01 07:07:37,428 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 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 07:07:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:37,583 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-01 07:07:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 07:07:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 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 16 [2021-05-01 07:07:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:37,584 INFO L225 Difference]: With dead ends: 23 [2021-05-01 07:07:37,585 INFO L226 Difference]: Without dead ends: 18 [2021-05-01 07:07:37,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-05-01 07:07:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-01 07:07:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-01 07:07:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 07:07:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-01 07:07:37,588 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-05-01 07:07:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:37,588 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-01 07:07:37,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 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 07:07:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-01 07:07:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 07:07:37,589 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:07:37,589 INFO L519 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:07:37,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 07:07:37,589 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:07:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:07:37,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 6 times [2021-05-01 07:07:37,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:07:37,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114016086] [2021-05-01 07:07:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:07:37,592 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2021-05-01 07:07:37,593 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:07:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:37,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:07:37,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:07:37,678 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-05-01 07:07:37,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:07:37,702 INFO L142 QuantifierPusher]: treesize reduction 28, result has 51.7 percent of original size [2021-05-01 07:07:37,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:07:37,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:07:37,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:07:37,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:07:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:07:37,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:07:37,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:07:37,766 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 07:07:37,766 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:07:37,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114016086] [2021-05-01 07:07:37,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2114016086] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:07:37,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:07:37,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 07:07:37,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349073834] [2021-05-01 07:07:37,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 07:07:37,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:07:37,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 07:07:37,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:07:37,769 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 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 07:07:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:07:38,041 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-05-01 07:07:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 07:07:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 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 17 [2021-05-01 07:07:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:07:38,042 INFO L225 Difference]: With dead ends: 22 [2021-05-01 07:07:38,042 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 07:07:38,042 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 296.1ms TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:07:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 07:07:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 07:07:38,043 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 07:07:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 07:07:38,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-01 07:07:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:07:38,043 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 07:07:38,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 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 07:07:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 07:07:38,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 07:07:38,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 07:07:38,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-01 07:07:38,287 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-01 07:07:38,288 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-01 07:07:38,288 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-01 07:07:38,288 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-01 07:07:38,288 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 07:07:38,288 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-01 07:07:38,288 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-01 07:07:38,288 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-01 07:07:38,288 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-01 07:07:38,288 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-01 07:07:38,288 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 12 22) the Hoare annotation is: true [2021-05-01 07:07:38,288 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 12 22) the Hoare annotation is: true [2021-05-01 07:07:38,289 INFO L194 CegarLoopUtils]: At program point L16-2(lines 16 19) the Hoare annotation is: (let ((.cse2 (div main_~x~0 4294967296))) (let ((.cse1 (< 0 (+ .cse2 1)))) (or (let ((.cse0 (* 4294967296 .cse2))) (and (< (+ .cse0 5) main_~x~0) .cse1 (<= main_~x~0 (+ .cse0 6)))) (and (<= main_~x~0 5) (<= 5 main_~x~0)) (and .cse1 (<= main_~x~0 4))))) [2021-05-01 07:07:38,289 INFO L194 CegarLoopUtils]: At program point L16-3(lines 16 19) the Hoare annotation is: (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (< 0 (+ .cse1 1)) (<= main_~x~0 (+ .cse0 6))))) [2021-05-01 07:07:38,289 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 12 22) the Hoare annotation is: true [2021-05-01 07:07:38,289 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-01 07:07:38,289 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-05-01 07:07:38,289 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 07:07:38,289 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 07:07:38,289 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-05-01 07:07:38,289 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 07:07:38,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:07:38 BoogieIcfgContainer [2021-05-01 07:07:38,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:07:38,306 INFO L168 Benchmark]: Toolchain (without parser) took 3194.73 ms. Allocated memory was 187.7 MB in the beginning and 237.0 MB in the end (delta: 49.3 MB). Free memory was 152.9 MB in the beginning and 137.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:38,309 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 187.7 MB. Free memory is still 169.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:07:38,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.53 ms. Allocated memory is still 187.7 MB. Free memory was 152.7 MB in the beginning and 170.7 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:38,309 INFO L168 Benchmark]: Boogie Preprocessor took 31.62 ms. Allocated memory is still 187.7 MB. Free memory was 170.7 MB in the beginning and 169.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:38,310 INFO L168 Benchmark]: RCFGBuilder took 298.01 ms. Allocated memory is still 187.7 MB. Free memory was 169.1 MB in the beginning and 156.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:38,310 INFO L168 Benchmark]: TraceAbstraction took 2623.63 ms. Allocated memory was 187.7 MB in the beginning and 237.0 MB in the end (delta: 49.3 MB). Free memory was 156.5 MB in the beginning and 137.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 69.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:07:38,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 187.7 MB. Free memory is still 169.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.53 ms. Allocated memory is still 187.7 MB. Free memory was 152.7 MB in the beginning and 170.7 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.62 ms. Allocated memory is still 187.7 MB. Free memory was 170.7 MB in the beginning and 169.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 298.01 ms. Allocated memory is still 187.7 MB. Free memory was 169.1 MB in the beginning and 156.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2623.63 ms. Allocated memory was 187.7 MB in the beginning and 237.0 MB in the end (delta: 49.3 MB). Free memory was 156.5 MB in the beginning and 137.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 69.4 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: 2318.7ms, OverallIterations: 8, TraceHistogramMax: 6, EmptinessCheckTime: 10.2ms, AutomataDifference: 1117.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 243.1ms, InitialAbstractionConstructionTime: 6.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 131 SDs, 0 SdLazy, 253 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 213.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1169.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 18 LocationsWithAnnotation, 66 PreInvPairs, 94 NumberOfFragments, 128 HoareAnnotationTreeSize, 66 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 79.4ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 527 FormulaSimplificationTreeSizeReductionInter, 152.6ms 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: 16]: Loop Invariant Derived loop invariant: (((4294967296 * (x / 4294967296) + 5 < x && 0 < x / 4294967296 + 1) && x <= 4294967296 * (x / 4294967296) + 6) || (x <= 5 && 5 <= x)) || (0 < x / 4294967296 + 1 && x <= 4) - 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...