/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 22:30:30,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 22:30:30,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 22:30:30,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 22:30:30,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 22:30:30,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 22:30:30,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 22:30:30,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 22:30:30,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 22:30:30,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 22:30:30,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 22:30:30,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 22:30:30,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 22:30:30,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 22:30:30,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 22:30:30,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 22:30:30,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 22:30:30,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 22:30:30,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 22:30:30,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 22:30:30,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 22:30:30,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 22:30:30,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 22:30:30,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 22:30:30,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 22:30:30,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 22:30:30,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 22:30:30,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 22:30:30,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 22:30:30,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 22:30:30,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 22:30:30,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 22:30:30,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 22:30:30,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 22:30:30,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 22:30:30,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 22:30:30,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 22:30:30,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 22:30:30,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 22:30:30,440 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 22:30:30,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 22:30:30,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 22:30:30,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 22:30:30,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 22:30:30,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 22:30:30,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 22:30:30,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 22:30:30,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 22:30:30,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 22:30:30,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 22:30:30,442 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 22:30:30,442 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 22:30:30,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 22:30:30,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 22:30:30,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 22:30:30,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 22:30:30,736 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 22:30:30,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c [2021-05-02 22:30:30,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bded1dc/afec53c7b8dc4b0bb6d669df18c4c5b8/FLAG798cd7703 [2021-05-02 22:30:31,334 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 22:30:31,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c [2021-05-02 22:30:31,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bded1dc/afec53c7b8dc4b0bb6d669df18c4c5b8/FLAG798cd7703 [2021-05-02 22:30:31,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bded1dc/afec53c7b8dc4b0bb6d669df18c4c5b8 [2021-05-02 22:30:31,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 22:30:31,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 22:30:31,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 22:30:31,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 22:30:31,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 22:30:31,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:30:31" (1/1) ... [2021-05-02 22:30:31,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24dc2b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:31, skipping insertion in model container [2021-05-02 22:30:31,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:30:31" (1/1) ... [2021-05-02 22:30:31,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 22:30:31,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 22:30:31,942 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c[458,471] [2021-05-02 22:30:31,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:30:31,968 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 22:30:31,991 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c[458,471] [2021-05-02 22:30:31,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:30:32,020 INFO L208 MainTranslator]: Completed translation [2021-05-02 22:30:32,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32 WrapperNode [2021-05-02 22:30:32,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 22:30:32,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 22:30:32,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 22:30:32,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 22:30:32,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 22:30:32,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 22:30:32,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 22:30:32,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 22:30:32,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 22:30:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 22:30:32,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 22:30:32,122 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 22:30:32,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 22:30:32,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 22:30:32,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 22:30:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 22:30:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 22:30:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 22:30:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 22:30:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2021-05-02 22:30:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 22:30:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 22:30:32,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 22:30:32,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 22:30:32,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 22:30:32,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 22:30:32,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 22:30:32,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 22:30:32,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 22:30:32,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 22:30:32,303 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 22:30:32,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:30:32 BoogieIcfgContainer [2021-05-02 22:30:32,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 22:30:32,305 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 22:30:32,305 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 22:30:32,306 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 22:30:32,308 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:30:32" (1/1) ... [2021-05-02 22:30:32,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:30:32 BasicIcfg [2021-05-02 22:30:32,324 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 22:30:32,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 22:30:32,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 22:30:32,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 22:30:32,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 10:30:31" (1/4) ... [2021-05-02 22:30:32,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5478f710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:30:32, skipping insertion in model container [2021-05-02 22:30:32,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:30:32" (2/4) ... [2021-05-02 22:30:32,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5478f710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:30:32, skipping insertion in model container [2021-05-02 22:30:32,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:30:32" (3/4) ... [2021-05-02 22:30:32,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5478f710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:30:32, skipping insertion in model container [2021-05-02 22:30:32,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:30:32" (4/4) ... [2021-05-02 22:30:32,331 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound1.cJordan [2021-05-02 22:30:32,336 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 22:30:32,340 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 22:30:32,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 22:30:32,372 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 22:30:32,372 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 22:30:32,372 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 22:30:32,372 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 22:30:32,373 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 22:30:32,373 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 22:30:32,373 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 22:30:32,373 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 22:30:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 22:30:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 22:30:32,391 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:30:32,391 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:30:32,392 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:30:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:30:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1187991702, now seen corresponding path program 1 times [2021-05-02 22:30:32,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:30:32,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307828348] [2021-05-02 22:30:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:30:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:30:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 22:30:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:30:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 22:30:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:30:32,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 22:30:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:30:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 22:30:32,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:30:32,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307828348] [2021-05-02 22:30:32,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307828348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:30:32,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:30:32,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 22:30:32,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255028245] [2021-05-02 22:30:32,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 22:30:32,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:30:32,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 22:30:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:30:32,685 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 22:30:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:30:32,805 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-05-02 22:30:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 22:30:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-02 22:30:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:30:32,814 INFO L225 Difference]: With dead ends: 29 [2021-05-02 22:30:32,815 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 22:30:32,817 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:30:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 22:30:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 22:30:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 22:30:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-05-02 22:30:32,852 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2021-05-02 22:30:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:30:32,853 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-05-02 22:30:32,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 22:30:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-05-02 22:30:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 22:30:32,855 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:30:32,855 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:30:32,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 22:30:32,856 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:30:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:30:32,858 INFO L82 PathProgramCache]: Analyzing trace with hash 793962506, now seen corresponding path program 1 times [2021-05-02 22:30:32,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:30:32,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964778882] [2021-05-02 22:30:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:30:32,907 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:30:32,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531948087] [2021-05-02 22:30:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:30:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:30:32,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 22:30:32,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:30:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 22:30:33,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:30:33,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964778882] [2021-05-02 22:30:33,136 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:30:33,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531948087] [2021-05-02 22:30:33,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531948087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:30:33,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:30:33,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 22:30:33,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984427941] [2021-05-02 22:30:33,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 22:30:33,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:30:33,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 22:30:33,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 22:30:33,141 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 22:30:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:30:33,237 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-02 22:30:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 22:30:33,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-05-02 22:30:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:30:33,239 INFO L225 Difference]: With dead ends: 33 [2021-05-02 22:30:33,240 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 22:30:33,241 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-02 22:30:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 22:30:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 22:30:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 22:30:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-05-02 22:30:33,254 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2021-05-02 22:30:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:30:33,255 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-05-02 22:30:33,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 22:30:33,256 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-05-02 22:30:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 22:30:33,258 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:30:33,263 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:30:33,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 22:30:33,477 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:30:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:30:33,478 INFO L82 PathProgramCache]: Analyzing trace with hash -503871754, now seen corresponding path program 1 times [2021-05-02 22:30:33,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:30:33,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495010920] [2021-05-02 22:30:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:30:33,490 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:30:33,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478379787] [2021-05-02 22:30:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:30:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:30:33,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 22:30:33,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:30:33,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 22:30:33,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:30:33,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495010920] [2021-05-02 22:30:33,661 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:30:33,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478379787] [2021-05-02 22:30:33,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478379787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:30:33,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:30:33,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 22:30:33,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25287651] [2021-05-02 22:30:33,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 22:30:33,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:30:33,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 22:30:33,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:30:33,663 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 22:30:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:30:33,782 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-05-02 22:30:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 22:30:33,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 22:30:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:30:33,783 INFO L225 Difference]: With dead ends: 40 [2021-05-02 22:30:33,783 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 22:30:33,784 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 22:30:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 22:30:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-05-02 22:30:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 22:30:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2021-05-02 22:30:33,789 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 29 [2021-05-02 22:30:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:30:33,789 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2021-05-02 22:30:33,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 22:30:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2021-05-02 22:30:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 22:30:33,790 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:30:33,790 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:30:34,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:30:34,001 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:30:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:30:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1813677706, now seen corresponding path program 2 times [2021-05-02 22:30:34,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:30:34,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802926646] [2021-05-02 22:30:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:30:34,013 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:30:34,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657496363] [2021-05-02 22:30:34,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:30:34,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 22:30:34,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 22:30:34,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 22:30:34,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:30:34,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 22:30:34,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:30:34,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802926646] [2021-05-02 22:30:34,289 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:30:34,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657496363] [2021-05-02 22:30:34,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657496363] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:30:34,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:30:34,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 22:30:34,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983205032] [2021-05-02 22:30:34,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 22:30:34,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:30:34,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 22:30:34,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-02 22:30:34,291 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 22:30:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:30:34,335 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-05-02 22:30:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 22:30:34,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2021-05-02 22:30:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:30:34,336 INFO L225 Difference]: With dead ends: 37 [2021-05-02 22:30:34,336 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 22:30:34,337 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:30:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 22:30:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 22:30:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 22:30:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-05-02 22:30:34,341 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 36 [2021-05-02 22:30:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:30:34,341 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-05-02 22:30:34,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 22:30:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-05-02 22:30:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 22:30:34,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:30:34,342 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:30:34,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:30:34,563 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:30:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:30:34,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1285656823, now seen corresponding path program 1 times [2021-05-02 22:30:34,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:30:34,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393807332] [2021-05-02 22:30:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:30:34,575 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:30:34,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490433924] [2021-05-02 22:30:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:30:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:30:34,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 22:30:34,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:30:34,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:30:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-02 22:30:34,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:30:34,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393807332] [2021-05-02 22:30:34,888 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:30:34,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490433924] [2021-05-02 22:30:34,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490433924] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:30:34,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:30:34,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 22:30:34,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286854253] [2021-05-02 22:30:34,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 22:30:34,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:30:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 22:30:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 22:30:34,890 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 22:30:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:30:34,968 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-05-02 22:30:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 22:30:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2021-05-02 22:30:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:30:34,969 INFO L225 Difference]: With dead ends: 33 [2021-05-02 22:30:34,969 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 22:30:34,970 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 22:30:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 22:30:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 22:30:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 22:30:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 22:30:34,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-05-02 22:30:34,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:30:34,972 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 22:30:34,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 22:30:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 22:30:34,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 22:30:35,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:30:35,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:30:35 BasicIcfg [2021-05-02 22:30:35,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 22:30:35,189 INFO L168 Benchmark]: Toolchain (without parser) took 3373.53 ms. Allocated memory was 127.9 MB in the beginning and 178.3 MB in the end (delta: 50.3 MB). Free memory was 92.5 MB in the beginning and 144.1 MB in the end (delta: -51.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:30:35,189 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 127.9 MB. Free memory is still 109.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:30:35,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.77 ms. Allocated memory was 127.9 MB in the beginning and 178.3 MB in the end (delta: 50.3 MB). Free memory was 92.3 MB in the beginning and 160.7 MB in the end (delta: -68.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2021-05-02 22:30:35,189 INFO L168 Benchmark]: Boogie Preprocessor took 24.30 ms. Allocated memory is still 178.3 MB. Free memory was 160.7 MB in the beginning and 159.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 22:30:35,189 INFO L168 Benchmark]: RCFGBuilder took 253.33 ms. Allocated memory is still 178.3 MB. Free memory was 159.1 MB in the beginning and 145.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 22:30:35,190 INFO L168 Benchmark]: IcfgTransformer took 19.52 ms. Allocated memory is still 178.3 MB. Free memory was 145.0 MB in the beginning and 143.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 22:30:35,190 INFO L168 Benchmark]: TraceAbstraction took 2862.75 ms. Allocated memory is still 178.3 MB. Free memory was 143.4 MB in the beginning and 144.1 MB in the end (delta: -753.8 kB). Peak memory consumption was 294.7 kB. Max. memory is 8.0 GB. [2021-05-02 22:30:35,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 127.9 MB. Free memory is still 109.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 206.77 ms. Allocated memory was 127.9 MB in the beginning and 178.3 MB in the end (delta: 50.3 MB). Free memory was 92.3 MB in the beginning and 160.7 MB in the end (delta: -68.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.30 ms. Allocated memory is still 178.3 MB. Free memory was 160.7 MB in the beginning and 159.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 253.33 ms. Allocated memory is still 178.3 MB. Free memory was 159.1 MB in the beginning and 145.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 19.52 ms. Allocated memory is still 178.3 MB. Free memory was 145.0 MB in the beginning and 143.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2862.75 ms. Allocated memory is still 178.3 MB. Free memory was 143.4 MB in the beginning and 144.1 MB in the end (delta: -753.8 kB). Peak memory consumption was 294.7 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2815.5ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 15.0ms, AutomataDifference: 506.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 118 SDtfs, 47 SDslu, 387 SDs, 0 SdLazy, 225 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 260.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 292.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 44.6ms SsaConstructionTime, 164.9ms SatisfiabilityAnalysisTime, 886.5ms InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 10 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 43/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...