/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-zilu/benchmark04_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:57:10,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:57:10,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:57:10,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 07:57:10,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 07:57:10,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 07:57:10,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 07:57:10,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 07:57:10,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 07:57:10,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 07:57:10,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 07:57:10,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 07:57:10,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:57:10,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:57:10,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:57:10,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:57:10,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:57:10,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:57:10,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:57:10,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:57:10,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:57:10,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:57:10,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:57:10,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:57:10,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 07:57:10,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:57:10,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:57:10,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:57:10,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 07:57:10,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:57:10,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:57:10,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:57:10,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:57:10,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:57:10,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:57:10,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:57:10,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:57:10,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:57:10,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:57:10,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:57:10,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:57:10,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:57:10,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:57:10,962 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:57:10,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:57:11,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:57:11,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:57:11,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:57:11,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:57:11,197 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:57:11,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark04_conjunctive.i [2021-04-16 07:57:11,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c234c3a3/81f85d18ffc14243aff4b5a669028a78/FLAG82f54fab0 [2021-04-16 07:57:11,600 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:57:11,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark04_conjunctive.i [2021-04-16 07:57:11,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c234c3a3/81f85d18ffc14243aff4b5a669028a78/FLAG82f54fab0 [2021-04-16 07:57:11,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c234c3a3/81f85d18ffc14243aff4b5a669028a78 [2021-04-16 07:57:11,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:57:11,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:57:11,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:57:11,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:57:11,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:57:11,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52722460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11, skipping insertion in model container [2021-04-16 07:57:11,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:57:11,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:57:11,763 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-04-16 07:57:11,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:57:11,787 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:57:11,796 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-04-16 07:57:11,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:57:11,825 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:57:11,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11 WrapperNode [2021-04-16 07:57:11,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:57:11,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:57:11,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:57:11,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:57:11,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (1/1) ... [2021-04-16 07:57:11,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:57:11,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:57:11,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:57:11,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:57:11,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (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 [2021-04-16 07:57:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:57:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:57:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:57:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 07:57:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:57:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:57:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 07:57:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 07:57:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:57:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:57:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 07:57:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-04-16 07:57:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:57:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:57:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:57:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:57:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:57:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:57:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:57:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:57:12,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:57:12,151 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 07:57:12,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:57:12 BoogieIcfgContainer [2021-04-16 07:57:12,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:57:12,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:57:12,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:57:12,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:57:12,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:57:11" (1/3) ... [2021-04-16 07:57:12,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86370c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:57:12, skipping insertion in model container [2021-04-16 07:57:12,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:11" (2/3) ... [2021-04-16 07:57:12,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86370c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:57:12, skipping insertion in model container [2021-04-16 07:57:12,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:57:12" (3/3) ... [2021-04-16 07:57:12,157 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2021-04-16 07:57:12,160 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:57:12,163 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:57:12,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:57:12,204 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:57:12,205 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:57:12,205 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:57:12,205 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:57:12,205 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:57:12,205 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:57:12,205 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:57:12,205 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:57:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-04-16 07:57:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 07:57:12,221 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:12,221 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:12,222 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:12,228 INFO L82 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2021-04-16 07:57:12,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:12,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3950535] [2021-04-16 07:57:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:12,282 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:57:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:12,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:12,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 07:57:12,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:12,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:12,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:57:12,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3950535] [2021-04-16 07:57:12,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:57:12,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 07:57:12,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641271685] [2021-04-16 07:57:12,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 07:57:12,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:57:12,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 07:57:12,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 07:57:12,472 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-04-16 07:57:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:57:12,563 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-04-16 07:57:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 07:57:12,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2021-04-16 07:57:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:57:12,568 INFO L225 Difference]: With dead ends: 33 [2021-04-16 07:57:12,569 INFO L226 Difference]: Without dead ends: 14 [2021-04-16 07:57:12,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 07:57:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-04-16 07:57:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-04-16 07:57:12,593 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) [2021-04-16 07:57:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-04-16 07:57:12,594 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-04-16 07:57:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:57:12,594 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-04-16 07:57:12,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-04-16 07:57:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-04-16 07:57:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 07:57:12,595 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:12,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:12,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:57:12,596 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:12,596 INFO L82 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2021-04-16 07:57:12,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:12,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367677918] [2021-04-16 07:57:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:12,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 07:57:12,627 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_8 1) v_main_~n~0_6) InVars {main_~n~0=v_main_~n~0_6, main_~j~0=v_main_~j~0_8} OutVars{main_~n~0=v_main_~n~0_6, main_~j~0=v_main_~j~0_8} AuxVars[] AssignedVars[] [2021-04-16 07:57:12,635 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 07:57:12,638 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,648 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,653 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:12,655 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 07:57:12,659 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 07:57:12,664 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,673 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,677 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,684 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,710 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,714 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,717 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,721 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,722 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 53 [2021-04-16 07:57:12,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 07:57:12,776 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:57:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:12,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:12,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 07:57:12,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:57:12,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:12,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:12,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:12,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:57:12,944 INFO L142 QuantifierPusher]: treesize reduction 18, result has 71.4 percent of original size [2021-04-16 07:57:12,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:12,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:12,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 07:57:12,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 07:57:13,726 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~k~0_12 Int) (|v_main_#t~post7_7| Int) (|v_main_#t~post6_7| Int) (v_main_~n~0_9 Int) (v_main_~j~0_11 Int)) (let ((.cse0 (+ v_main_~k~0_12 v_main_~j~0_11))) (and (<= v_main_~n~0_9 .cse0) (or (and (= v_main_~j~0_11 c_main_~j~0) (= |c_main_#t~post7| |v_main_#t~post7_7|) (= |c_main_#t~post6| |v_main_#t~post6_7|) (= v_main_~k~0_12 c_main_~k~0)) (and (< v_main_~n~0_9 (+ c_main_~j~0 1)) (<= c_main_~j~0 v_main_~n~0_9) (< v_main_~j~0_11 c_main_~j~0) (= .cse0 (+ c_main_~j~0 c_main_~k~0)))) (<= (+ v_main_~j~0_11 1) v_main_~n~0_9)))) is different from true [2021-04-16 07:57:13,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:13,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:13,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:13,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 07:57:13,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 07:57:14,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:14,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:14,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367677918] [2021-04-16 07:57:14,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:57:14,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 07:57:14,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236589954] [2021-04-16 07:57:14,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 07:57:14,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:57:14,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 07:57:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=42, Unknown=2, NotChecked=12, Total=72 [2021-04-16 07:57:14,308 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2021-04-16 07:57:16,061 WARN L205 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-04-16 07:57:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:57:16,229 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-04-16 07:57:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 07:57:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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 [2021-04-16 07:57:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:57:16,231 INFO L225 Difference]: With dead ends: 20 [2021-04-16 07:57:16,231 INFO L226 Difference]: Without dead ends: 15 [2021-04-16 07:57:16,232 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3242.9ms TimeCoverageRelationStatistics Valid=36, Invalid=98, Unknown=2, NotChecked=20, Total=156 [2021-04-16 07:57:16,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-04-16 07:57:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-04-16 07:57:16,236 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) [2021-04-16 07:57:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-04-16 07:57:16,236 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-04-16 07:57:16,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:57:16,236 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-04-16 07:57:16,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2021-04-16 07:57:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-04-16 07:57:16,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:57:16,237 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:16,237 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:16,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 07:57:16,237 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:16,238 INFO L82 PathProgramCache]: Analyzing trace with hash 106583640, now seen corresponding path program 2 times [2021-04-16 07:57:16,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:16,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115822186] [2021-04-16 07:57:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:16,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 07:57:16,245 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_14 1) v_main_~n~0_10) InVars {main_~n~0=v_main_~n~0_10, main_~j~0=v_main_~j~0_14} OutVars{main_~n~0=v_main_~n~0_10, main_~j~0=v_main_~j~0_14} AuxVars[] AssignedVars[] [2021-04-16 07:57:16,248 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 07:57:16,249 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,255 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:16,258 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,259 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 07:57:16,270 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:16,274 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,278 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,282 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,286 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,295 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,299 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,302 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,305 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,308 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,309 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 53 [2021-04-16 07:57:16,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 07:57:16,338 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:57:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:16,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:16,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 07:57:16,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:57:16,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:16,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:16,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:16,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:57:16,462 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.6 percent of original size [2021-04-16 07:57:16,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:16,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:16,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 07:57:16,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 07:57:19,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:19,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:19,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:19,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 07:57:19,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 07:57:20,254 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-04-16 07:57:20,256 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size [2021-04-16 07:57:20,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:20,261 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 07:57:20,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 07:57:20,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 07:57:21,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:21,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:21,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115822186] [2021-04-16 07:57:21,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:57:21,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 07:57:21,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771292291] [2021-04-16 07:57:21,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 07:57:21,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:57:21,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 07:57:21,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=66, Unknown=5, NotChecked=0, Total=90 [2021-04-16 07:57:21,689 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:57:23,448 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 83 [2021-04-16 07:57:25,138 WARN L205 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 69 [2021-04-16 07:57:30,573 WARN L205 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-04-16 07:57:30,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:57:30,636 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-04-16 07:57:30,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 07:57:30,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 07:57:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:57:30,637 INFO L225 Difference]: With dead ends: 21 [2021-04-16 07:57:30,637 INFO L226 Difference]: Without dead ends: 16 [2021-04-16 07:57:30,638 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 14120.7ms TimeCoverageRelationStatistics Valid=55, Invalid=176, Unknown=9, NotChecked=0, Total=240 [2021-04-16 07:57:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-04-16 07:57:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-04-16 07:57:30,642 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) [2021-04-16 07:57:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-04-16 07:57:30,643 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-04-16 07:57:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:57:30,643 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-04-16 07:57:30,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:57:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-04-16 07:57:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-16 07:57:30,643 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:30,643 INFO L519 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:30,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 07:57:30,644 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:30,644 INFO L82 PathProgramCache]: Analyzing trace with hash -955485626, now seen corresponding path program 3 times [2021-04-16 07:57:30,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:30,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992862928] [2021-04-16 07:57:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:30,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 07:57:30,650 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_21 1) v_main_~n~0_14) InVars {main_~n~0=v_main_~n~0_14, main_~j~0=v_main_~j~0_21} OutVars{main_~n~0=v_main_~n~0_14, main_~j~0=v_main_~j~0_21} AuxVars[] AssignedVars[] [2021-04-16 07:57:30,653 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 07:57:30,654 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,657 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:30,660 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,661 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 07:57:30,664 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,666 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,671 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:30,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,677 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,679 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,683 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,686 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,689 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 53 [2021-04-16 07:57:30,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 07:57:30,711 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:57:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:30,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:30,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 07:57:30,781 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 07:57:30,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:57:30,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:30,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:30,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:30,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:57:30,832 INFO L142 QuantifierPusher]: treesize reduction 23, result has 68.1 percent of original size [2021-04-16 07:57:30,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:30,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:30,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 07:57:30,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 07:57:34,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:34,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:34,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:34,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 07:57:34,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 07:57:35,409 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 07:57:35,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:35,414 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 07:57:35,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 07:57:35,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:57:38,079 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 07:57:38,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:38,082 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 07:57:38,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 07:57:38,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:57:41,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:41,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:41,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992862928] [2021-04-16 07:57:41,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:57:41,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 07:57:41,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718169636] [2021-04-16 07:57:41,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 07:57:41,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:57:41,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 07:57:41,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=80, Unknown=9, NotChecked=0, Total=110 [2021-04-16 07:57:41,558 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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) [2021-04-16 07:57:45,983 WARN L205 SmtUtils]: Spent 4.38 s on a formula simplification that was a NOOP. DAG size: 97 [2021-04-16 07:57:47,952 WARN L205 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 83 [2021-04-16 07:57:48,691 WARN L205 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-16 07:57:57,022 WARN L205 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-16 07:57:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:57:57,895 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-04-16 07:57:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 07:57:57,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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 [2021-04-16 07:57:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:57:57,895 INFO L225 Difference]: With dead ends: 22 [2021-04-16 07:57:57,896 INFO L226 Difference]: Without dead ends: 17 [2021-04-16 07:57:57,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 26168.5ms TimeCoverageRelationStatistics Valid=67, Invalid=224, Unknown=15, NotChecked=0, Total=306 [2021-04-16 07:57:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-04-16 07:57:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-04-16 07:57:57,900 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) [2021-04-16 07:57:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-04-16 07:57:57,900 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-04-16 07:57:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:57:57,901 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-04-16 07:57:57,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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) [2021-04-16 07:57:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-04-16 07:57:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-16 07:57:57,901 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:57,901 INFO L519 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:57,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 07:57:57,901 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:57,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:57,902 INFO L82 PathProgramCache]: Analyzing trace with hash 480105496, now seen corresponding path program 4 times [2021-04-16 07:57:57,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:57,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331822879] [2021-04-16 07:57:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:57,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 07:57:57,908 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_29 1) v_main_~n~0_18) InVars {main_~n~0=v_main_~n~0_18, main_~j~0=v_main_~j~0_29} OutVars{main_~n~0=v_main_~n~0_18, main_~j~0=v_main_~j~0_29} AuxVars[] AssignedVars[] [2021-04-16 07:57:57,909 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 07:57:57,915 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,917 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,920 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,922 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,924 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,926 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,927 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,935 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,937 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:57,937 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 07:57:57,939 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 07:57:57,943 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,944 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,946 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,948 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,950 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 64 [2021-04-16 07:57:57,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 07:57:57,969 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:57:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:57,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:57,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:57,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 07:57:57,996 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 07:57:57,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:57:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:58,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:58,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:58,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:57:58,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:58,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:58,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:57:58,040 INFO L142 QuantifierPusher]: treesize reduction 18, result has 71.4 percent of original size [2021-04-16 07:57:58,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:57:58,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:58,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 07:57:58,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 07:58:00,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:58:00,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:58:00,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:58:00,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 07:58:00,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 07:58:01,611 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.8 percent of original size [2021-04-16 07:58:01,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:58:01,614 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 07:58:01,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 07:58:01,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 07:58:03,641 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-04-16 07:58:03,643 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 07:58:03,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:58:03,646 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 07:58:03,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 07:58:03,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 07:58:07,372 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-16 07:58:07,374 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 07:58:07,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:58:07,378 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 07:58:07,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 07:58:07,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 07:58:14,752 WARN L205 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-16 07:58:14,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:58:14,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:58:14,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331822879] [2021-04-16 07:58:14,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:58:14,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 07:58:14,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090215420] [2021-04-16 07:58:14,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 07:58:14,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:58:14,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 07:58:14,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=96, Unknown=13, NotChecked=0, Total=132 [2021-04-16 07:58:14,755 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 9 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) [2021-04-16 07:58:35,382 WARN L205 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-16 07:58:41,910 WARN L205 SmtUtils]: Spent 973.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-04-16 07:58:59,350 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 63 [2021-04-16 07:59:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:59:01,861 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-04-16 07:59:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 07:59:01,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 9 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 [2021-04-16 07:59:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:59:01,862 INFO L225 Difference]: With dead ends: 23 [2021-04-16 07:59:01,862 INFO L226 Difference]: Without dead ends: 18 [2021-04-16 07:59:01,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 47894.5ms TimeCoverageRelationStatistics Valid=60, Invalid=287, Unknown=33, NotChecked=0, Total=380 [2021-04-16 07:59:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-04-16 07:59:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-04-16 07:59:01,867 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) [2021-04-16 07:59:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-04-16 07:59:01,867 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-04-16 07:59:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:59:01,867 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-04-16 07:59:01,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 9 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) [2021-04-16 07:59:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-04-16 07:59:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 07:59:01,868 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:59:01,868 INFO L519 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:59:01,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-16 07:59:01,868 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:59:01,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:59:01,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2033757318, now seen corresponding path program 5 times [2021-04-16 07:59:01,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:59:01,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961283100] [2021-04-16 07:59:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:59:01,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 07:59:01,874 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_38 1) v_main_~n~0_22) InVars {main_~n~0=v_main_~n~0_22, main_~j~0=v_main_~j~0_38} OutVars{main_~n~0=v_main_~n~0_22, main_~j~0=v_main_~j~0_38} AuxVars[] AssignedVars[] [2021-04-16 07:59:01,876 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 07:59:01,876 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,880 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:59:01,883 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,883 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 07:59:01,886 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 07:59:01,891 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,896 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,900 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,903 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,906 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,908 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,910 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,912 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,914 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,916 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 53 [2021-04-16 07:59:01,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:59:01,932 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:59:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:59:01,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:59:01,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 07:59:01,962 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 07:59:01,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:59:01,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:59:01,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:59:01,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:01,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:59:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:59:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:59:02,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:02,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:59:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:59:02,004 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.3 percent of original size [2021-04-16 07:59:02,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:59:02,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:02,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 07:59:02,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 07:59:05,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:05,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:59:05,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 07:59:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 07:59:07,316 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.2 percent of original size [2021-04-16 07:59:07,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:59:07,323 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size [2021-04-16 07:59:07,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:59:07,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 07:59:11,366 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.2 percent of original size [2021-04-16 07:59:11,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:59:11,375 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size [2021-04-16 07:59:11,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:59:11,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 07:59:16,843 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.2 percent of original size [2021-04-16 07:59:16,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:59:16,846 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size [2021-04-16 07:59:16,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:59:16,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 07:59:22,531 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.2 percent of original size [2021-04-16 07:59:22,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:59:22,534 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size [2021-04-16 07:59:22,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:59:22,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 07:59:31,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:59:31,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:59:31,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961283100] [2021-04-16 07:59:31,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:59:31,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 07:59:31,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454172740] [2021-04-16 07:59:31,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 07:59:31,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:59:31,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 07:59:31,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=113, Unknown=18, NotChecked=0, Total=156 [2021-04-16 07:59:31,527 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 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) [2021-04-16 07:59:41,275 WARN L205 SmtUtils]: Spent 9.67 s on a formula simplification that was a NOOP. DAG size: 129 [2021-04-16 07:59:49,383 WARN L205 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 114 [2021-04-16 07:59:57,572 WARN L205 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 102 [2021-04-16 08:00:01,692 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 89 [2021-04-16 08:00:05,782 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 75 [2021-04-16 08:00:29,984 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 63 [2021-04-16 08:00:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:00:32,097 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-04-16 08:00:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 08:00:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 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 [2021-04-16 08:00:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:00:32,098 INFO L225 Difference]: With dead ends: 24 [2021-04-16 08:00:32,098 INFO L226 Difference]: Without dead ends: 19 [2021-04-16 08:00:32,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 87880.8ms TimeCoverageRelationStatistics Valid=97, Invalid=334, Unknown=31, NotChecked=0, Total=462 [2021-04-16 08:00:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-04-16 08:00:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-04-16 08:00:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2021-04-16 08:00:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-04-16 08:00:32,106 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2021-04-16 08:00:32,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:00:32,106 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-04-16 08:00:32,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 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) [2021-04-16 08:00:32,107 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-04-16 08:00:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-16 08:00:32,107 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:00:32,107 INFO L519 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:00:32,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-16 08:00:32,107 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:00:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:00:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1342643752, now seen corresponding path program 6 times [2021-04-16 08:00:32,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:00:32,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454952191] [2021-04-16 08:00:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:00:32,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 08:00:32,114 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_48 1) v_main_~n~0_26) InVars {main_~n~0=v_main_~n~0_26, main_~j~0=v_main_~j~0_48} OutVars{main_~n~0=v_main_~n~0_26, main_~j~0=v_main_~j~0_48} AuxVars[] AssignedVars[] [2021-04-16 08:00:32,116 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 08:00:32,116 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,120 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 08:00:32,122 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,123 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 08:00:32,126 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,128 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,130 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,132 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 08:00:32,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,144 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,145 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,147 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,149 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,152 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,153 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 64 [2021-04-16 08:00:32,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 08:00:32,171 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 08:00:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:00:32,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:00:32,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 08:00:32,198 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 08:00:32,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 08:00:32,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:00:32,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:00:32,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:00:32,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:00:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:00:32,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:00:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 08:00:32,240 INFO L142 QuantifierPusher]: treesize reduction 23, result has 68.1 percent of original size [2021-04-16 08:00:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:00:32,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:32,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 08:00:32,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 08:00:36,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:36,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:00:36,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:00:36,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:00:36,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:00:38,401 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:00:38,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:00:38,405 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:00:38,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:00:38,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:00:42,740 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-04-16 08:00:42,741 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:00:42,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:00:42,744 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:00:42,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:00:42,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:00:48,801 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:00:48,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:00:48,804 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:00:48,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:00:48,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:00:56,890 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:00:56,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:00:56,894 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:00:56,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:00:56,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:01:06,979 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:01:06,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:01:06,985 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:01:06,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:01:06,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:01:19,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:01:19,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:01:19,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454952191] [2021-04-16 08:01:19,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:01:19,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 08:01:19,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839989039] [2021-04-16 08:01:19,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 08:01:19,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:01:19,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 08:01:19,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=132, Unknown=23, NotChecked=0, Total=182 [2021-04-16 08:01:19,105 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-04-16 08:01:31,305 WARN L205 SmtUtils]: Spent 12.13 s on a formula simplification that was a NOOP. DAG size: 136 [2021-04-16 08:01:43,434 WARN L205 SmtUtils]: Spent 12.10 s on a formula simplification that was a NOOP. DAG size: 122 [2021-04-16 08:01:51,618 WARN L205 SmtUtils]: Spent 8.14 s on a formula simplification that was a NOOP. DAG size: 111 [2021-04-16 08:01:57,829 WARN L205 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 99 [2021-04-16 08:02:01,911 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 86 [2021-04-16 08:02:06,024 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 73 [2021-04-16 08:02:32,262 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 62 [2021-04-16 08:02:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:02:34,406 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-04-16 08:02:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 08:02:34,406 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 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 18 [2021-04-16 08:02:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:02:34,407 INFO L225 Difference]: With dead ends: 25 [2021-04-16 08:02:34,407 INFO L226 Difference]: Without dead ends: 20 [2021-04-16 08:02:34,408 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 119861.6ms TimeCoverageRelationStatistics Valid=115, Invalid=401, Unknown=36, NotChecked=0, Total=552 [2021-04-16 08:02:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-04-16 08:02:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-04-16 08:02:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-04-16 08:02:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-04-16 08:02:34,418 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-04-16 08:02:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:02:34,418 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-04-16 08:02:34,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-04-16 08:02:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-04-16 08:02:34,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-04-16 08:02:34,418 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:02:34,419 INFO L519 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:02:34,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-16 08:02:34,419 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:02:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:02:34,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1363105478, now seen corresponding path program 7 times [2021-04-16 08:02:34,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:02:34,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965227006] [2021-04-16 08:02:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:02:34,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 08:02:34,425 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_59 1) v_main_~n~0_30) InVars {main_~n~0=v_main_~n~0_30, main_~j~0=v_main_~j~0_59} OutVars{main_~n~0=v_main_~n~0_30, main_~j~0=v_main_~j~0_59} AuxVars[] AssignedVars[] [2021-04-16 08:02:34,426 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 08:02:34,427 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,430 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,433 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 08:02:34,434 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 08:02:34,438 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,441 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,444 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 08:02:34,447 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,458 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,460 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,462 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,469 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,470 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 53 [2021-04-16 08:02:34,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 08:02:34,491 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 08:02:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:02:34,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:02:34,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 08:02:34,522 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 08:02:34,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 08:02:34,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:02:34,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:02:34,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:02:34,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:02:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:02:34,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:02:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 08:02:34,592 INFO L142 QuantifierPusher]: treesize reduction 23, result has 68.1 percent of original size [2021-04-16 08:02:34,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:02:34,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:34,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 08:02:34,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 08:02:40,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:02:40,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:02:40,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:02:40,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:02:42,720 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:02:42,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:02:42,733 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:02:42,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:02:42,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:02:46,859 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:02:46,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:02:46,861 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:02:46,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:02:46,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:02:52,910 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:02:52,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:02:52,913 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:02:52,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:02:52,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:03:01,009 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:03:01,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:03:01,012 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:03:01,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:03:01,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:03:11,097 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:03:11,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:03:11,099 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:03:11,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:03:11,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:03:23,843 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:03:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:03:23,845 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-04-16 08:03:23,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:03:23,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 08:03:37,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:03:37,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:03:37,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965227006] [2021-04-16 08:03:37,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:03:37,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 08:03:37,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741903769] [2021-04-16 08:03:37,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 08:03:37,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:03:37,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 08:03:37,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=150, Unknown=31, NotChecked=0, Total=210 [2021-04-16 08:03:37,971 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-04-16 08:03:52,178 WARN L205 SmtUtils]: Spent 14.13 s on a formula simplification that was a NOOP. DAG size: 149 [2021-04-16 08:04:06,317 WARN L205 SmtUtils]: Spent 14.10 s on a formula simplification that was a NOOP. DAG size: 135 [2021-04-16 08:04:20,481 WARN L205 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 124 [2021-04-16 08:04:28,738 WARN L205 SmtUtils]: Spent 8.16 s on a formula simplification that was a NOOP. DAG size: 112 [2021-04-16 08:04:34,983 WARN L205 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 99 [2021-04-16 08:04:41,101 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 86 [2021-04-16 08:04:45,994 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 73 [2021-04-16 08:04:50,068 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 60 [2021-04-16 08:05:22,222 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 62 [2021-04-16 08:05:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:05:22,424 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-04-16 08:05:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 08:05:22,425 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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 19 [2021-04-16 08:05:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:05:22,425 INFO L225 Difference]: With dead ends: 26 [2021-04-16 08:05:22,425 INFO L226 Difference]: Without dead ends: 21 [2021-04-16 08:05:22,426 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 163369.3ms TimeCoverageRelationStatistics Valid=135, Invalid=467, Unknown=48, NotChecked=0, Total=650 [2021-04-16 08:05:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-04-16 08:05:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-04-16 08:05:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-04-16 08:05:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-04-16 08:05:22,434 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-04-16 08:05:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:05:22,435 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-04-16 08:05:22,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-04-16 08:05:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-04-16 08:05:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-16 08:05:22,435 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:05:22,435 INFO L519 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:05:22,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-16 08:05:22,435 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:05:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:05:22,436 INFO L82 PathProgramCache]: Analyzing trace with hash -658014312, now seen corresponding path program 8 times [2021-04-16 08:05:22,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:05:22,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776797249] [2021-04-16 08:05:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:05:22,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 08:05:22,450 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_71 1) v_main_~n~0_34) InVars {main_~n~0=v_main_~n~0_34, main_~j~0=v_main_~j~0_71} OutVars{main_~n~0=v_main_~n~0_34, main_~j~0=v_main_~j~0_71} AuxVars[] AssignedVars[] [2021-04-16 08:05:22,452 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 08:05:22,453 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,457 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 08:05:22,460 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,461 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 08:05:22,464 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 08:05:22,473 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,481 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,490 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,497 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,501 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,507 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,509 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,512 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,515 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,515 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 53 [2021-04-16 08:05:22,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 08:05:22,535 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 08:05:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:05:22,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:05:22,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 08:05:22,586 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 08:05:22,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 08:05:22,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:05:22,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:05:22,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:05:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:05:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:05:22,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:05:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 08:05:22,622 INFO L142 QuantifierPusher]: treesize reduction 18, result has 71.4 percent of original size [2021-04-16 08:05:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:05:22,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:22,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 08:05:22,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 08:05:24,653 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_#t~post7_49| Int) (|v_main_#t~post6_49| Int) (v_main_~n~0_37 Int) (v_main_~k~0_75 Int) (v_main_~j~0_74 Int)) (let ((.cse0 (+ v_main_~k~0_75 v_main_~j~0_74))) (and (<= v_main_~n~0_37 .cse0) (or (and (< v_main_~n~0_37 (+ c_main_~j~0 1)) (= (+ c_main_~j~0 c_main_~k~0) .cse0) (< v_main_~j~0_74 c_main_~j~0) (<= c_main_~j~0 v_main_~n~0_37)) (and (= |c_main_#t~post6| |v_main_#t~post6_49|) (= |c_main_#t~post7| |v_main_#t~post7_49|) (= v_main_~k~0_75 c_main_~k~0) (= v_main_~j~0_74 c_main_~j~0))) (<= (+ v_main_~j~0_74 1) v_main_~n~0_37)))) is different from true [2021-04-16 08:05:24,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:05:24,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:05:24,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 08:05:24,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 08:05:27,182 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-04-16 08:05:27,184 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.8 percent of original size [2021-04-16 08:05:27,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:05:27,195 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 08:05:27,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:05:27,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:05:31,264 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:05:31,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:05:31,273 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 08:05:31,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:05:31,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:05:39,386 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:05:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:05:39,389 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 08:05:39,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:05:39,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:05:47,494 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:05:47,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:05:47,508 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 08:05:47,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:05:47,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:05:59,607 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:05:59,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:05:59,610 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 08:05:59,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:05:59,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:06:11,808 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-16 08:06:11,809 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:06:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:06:11,821 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 08:06:11,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:06:11,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:06:27,911 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 37 [2021-04-16 08:06:27,913 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-04-16 08:06:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:06:27,915 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-04-16 08:06:27,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:06:27,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 08:06:46,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:06:46,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:06:46,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776797249] [2021-04-16 08:06:46,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:06:46,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 08:06:46,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911727006] [2021-04-16 08:06:46,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 08:06:46,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:06:46,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 08:06:46,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=144, Unknown=40, NotChecked=26, Total=240 [2021-04-16 08:06:46,022 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-04-16 08:07:18,570 WARN L205 SmtUtils]: Spent 32.42 s on a formula simplification. DAG size of input: 172 DAG size of output: 157 [2021-04-16 08:07:33,567 WARN L205 SmtUtils]: Spent 14.94 s on a formula simplification that was a NOOP. DAG size: 155 [2021-04-16 08:07:45,998 WARN L205 SmtUtils]: Spent 12.14 s on a formula simplification that was a NOOP. DAG size: 144 [2021-04-16 08:08:02,199 WARN L205 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 131 [2021-04-16 08:08:10,818 WARN L205 SmtUtils]: Spent 8.10 s on a formula simplification that was a NOOP. DAG size: 117 [2021-04-16 08:08:23,354 WARN L205 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 103 [2021-04-16 08:08:33,870 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 89 [2021-04-16 08:08:46,103 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 75 [2021-04-16 08:08:54,192 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 61 [2021-04-16 08:09:26,344 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 63 [2021-04-16 08:09:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:09:26,458 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-04-16 08:09:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 08:09:26,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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 20 [2021-04-16 08:09:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:09:26,459 INFO L225 Difference]: With dead ends: 27 [2021-04-16 08:09:26,459 INFO L226 Difference]: Without dead ends: 22 [2021-04-16 08:09:26,460 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 236613.1ms TimeCoverageRelationStatistics Valid=155, Invalid=485, Unknown=66, NotChecked=50, Total=756 [2021-04-16 08:09:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-04-16 08:09:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-04-16 08:09:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-04-16 08:09:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-04-16 08:09:26,484 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2021-04-16 08:09:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:09:26,484 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-04-16 08:09:26,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-04-16 08:09:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-04-16 08:09:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-16 08:09:26,485 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:09:26,485 INFO L519 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:09:26,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-16 08:09:26,485 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:09:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:09:26,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1111781638, now seen corresponding path program 9 times [2021-04-16 08:09:26,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:09:26,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671299250] [2021-04-16 08:09:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:09:26,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 08:09:26,493 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (+ v_main_~j~0_84 1) v_main_~n~0_38) InVars {main_~n~0=v_main_~n~0_38, main_~j~0=v_main_~j~0_84} OutVars{main_~n~0=v_main_~n~0_38, main_~j~0=v_main_~j~0_84} AuxVars[] AssignedVars[] [2021-04-16 08:09:26,494 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size [2021-04-16 08:09:26,501 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,507 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,509 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,511 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,514 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,518 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,521 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 08:09:26,521 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 08:09:26,524 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 08:09:26,526 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,528 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,530 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,533 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,533 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 82.1 percent of original size 53 [2021-04-16 08:09:26,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 08:09:26,552 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 08:09:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:09:26,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:09:26,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 08:09:26,579 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 08:09:26,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 08:09:26,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:09:26,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:09:26,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:09:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:09:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:09:26,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:09:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 08:09:26,617 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.6 percent of original size [2021-04-16 08:09:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:09:26,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:26,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 08:09:26,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 08:09:32,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:09:32,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:09:32,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 08:09:32,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 08:09:34,830 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size [2021-04-16 08:09:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:09:34,832 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:09:34,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:09:34,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:09:38,976 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-04-16 08:09:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:09:38,979 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:09:38,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:09:38,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:09:47,061 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 36 [2021-04-16 08:09:47,066 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-04-16 08:09:47,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:09:47,068 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:09:47,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:09:47,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:09:57,137 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 36 [2021-04-16 08:09:57,138 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-04-16 08:09:57,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:09:57,140 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:09:57,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:09:57,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:10:07,266 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-04-16 08:10:07,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:10:07,269 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:10:07,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:10:07,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:10:19,362 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-04-16 08:10:19,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:10:19,364 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:10:19,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:10:19,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:10:35,492 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-04-16 08:10:35,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:10:35,494 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:10:35,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:10:35,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:10:51,642 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-04-16 08:10:51,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 08:10:51,644 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 08:10:51,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 08:10:51,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 08:11:11,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:11:11,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:11:11,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671299250] [2021-04-16 08:11:11,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:11:11,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 08:11:11,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419449150] [2021-04-16 08:11:11,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 08:11:11,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:11:11,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 08:11:11,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=189, Unknown=50, NotChecked=0, Total=272 [2021-04-16 08:11:11,788 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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)