/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/divbin_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:11:20,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:11:20,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:11:20,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:11:20,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:11:20,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:11:20,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:11:20,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:11:20,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:11:20,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:11:20,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:11:20,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:11:20,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:11:20,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:11:20,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:11:20,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:11:20,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:11:20,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:11:20,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:11:20,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:11:20,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:11:20,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:11:20,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:11:20,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:11:20,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:11:20,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:11:20,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:11:20,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:11:20,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:11:20,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:11:20,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:11:20,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:11:20,390 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:11:20,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:11:20,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:11:20,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:11:20,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:11:20,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:11:20,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:11:20,391 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:11:20,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:11:20,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:11:20,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:11:20,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:11:20,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:11:20,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:11:20,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:11:20,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:11:20,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:11:20,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:11:20,394 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:11:20,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:11:20,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:11:20,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:11:20,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:11:20,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:11:20,651 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:11:20,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2021-05-02 20:11:20,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d93684b8e/4ad47c2955ba477daab5cff800d03e9c/FLAG1c6c9cf6d [2021-05-02 20:11:21,068 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:11:21,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2021-05-02 20:11:21,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d93684b8e/4ad47c2955ba477daab5cff800d03e9c/FLAG1c6c9cf6d [2021-05-02 20:11:21,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d93684b8e/4ad47c2955ba477daab5cff800d03e9c [2021-05-02 20:11:21,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:11:21,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:11:21,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:11:21,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:11:21,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:11:21,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1f354f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21, skipping insertion in model container [2021-05-02 20:11:21,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:11:21,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:11:21,218 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/divbin_unwindbound2.i[958,971] [2021-05-02 20:11:21,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:11:21,243 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:11:21,290 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/divbin_unwindbound2.i[958,971] [2021-05-02 20:11:21,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:11:21,316 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:11:21,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21 WrapperNode [2021-05-02 20:11:21,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:11:21,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:11:21,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:11:21,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:11:21,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:11:21,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:11:21,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:11:21,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:11:21,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (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 20:11:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:11:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:11:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:11:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:11:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:11:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:11:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:11:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:11:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 20:11:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 20:11:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:11:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:11:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:11:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:11:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:11:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:11:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:11:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:11:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:11:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:11:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:11:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:11:21,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:11:21,567 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:11:21,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:11:21 BoogieIcfgContainer [2021-05-02 20:11:21,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:11:21,568 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:11:21,569 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:11:21,569 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:11:21,571 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:11:21" (1/1) ... [2021-05-02 20:11:21,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:11:21 BasicIcfg [2021-05-02 20:11:21,581 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:11:21,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:11:21,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:11:21,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:11:21,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:11:21" (1/4) ... [2021-05-02 20:11:21,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29983905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:11:21, skipping insertion in model container [2021-05-02 20:11:21,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:11:21" (2/4) ... [2021-05-02 20:11:21,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29983905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:11:21, skipping insertion in model container [2021-05-02 20:11:21,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:11:21" (3/4) ... [2021-05-02 20:11:21,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29983905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:11:21, skipping insertion in model container [2021-05-02 20:11:21,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:11:21" (4/4) ... [2021-05-02 20:11:21,585 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.iJordan [2021-05-02 20:11:21,588 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:11:21,590 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:11:21,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:11:21,610 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:11:21,610 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:11:21,610 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:11:21,610 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:11:21,610 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:11:21,610 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:11:21,610 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:11:21,610 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:11:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:11:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 20:11:21,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:21,623 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:21,623 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:21,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:21,626 INFO L82 PathProgramCache]: Analyzing trace with hash 35225450, now seen corresponding path program 1 times [2021-05-02 20:11:21,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:21,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490718124] [2021-05-02 20:11:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:21,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:11:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:11:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:21,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 20:11:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:21,891 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 20:11:21,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:21,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490718124] [2021-05-02 20:11:21,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490718124] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:11:21,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:11:21,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:11:21,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949664620] [2021-05-02 20:11:21,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:11:21,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:21,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:11:21,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:11:21,906 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:11:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:21,987 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-05-02 20:11:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:11:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23 [2021-05-02 20:11:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:21,993 INFO L225 Difference]: With dead ends: 34 [2021-05-02 20:11:21,994 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 20:11:21,995 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:11:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 20:11:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 20:11:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:11:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-05-02 20:11:22,020 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2021-05-02 20:11:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:22,020 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-05-02 20:11:22,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:11:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-05-02 20:11:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 20:11:22,022 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:22,022 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:22,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:11:22,022 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash 106385839, now seen corresponding path program 1 times [2021-05-02 20:11:22,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:22,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316442307] [2021-05-02 20:11:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:22,041 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:11:22,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681342806] [2021-05-02 20:11:22,042 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 20:11:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:22,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 20:11:22,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:11:22,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,200 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 20:11:22,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:22,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316442307] [2021-05-02 20:11:22,200 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:11:22,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681342806] [2021-05-02 20:11:22,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681342806] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:11:22,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:11:22,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 20:11:22,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003143185] [2021-05-02 20:11:22,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 20:11:22,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:22,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 20:11:22,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:11:22,202 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:22,210 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-05-02 20:11:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 20:11:22,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-05-02 20:11:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:22,211 INFO L225 Difference]: With dead ends: 30 [2021-05-02 20:11:22,211 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 20:11:22,212 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:11:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 20:11:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 20:11:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:11:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-05-02 20:11:22,215 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2021-05-02 20:11:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:22,215 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-05-02 20:11:22,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-05-02 20:11:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 20:11:22,216 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:22,216 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:22,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:11:22,431 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1662084126, now seen corresponding path program 1 times [2021-05-02 20:11:22,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:22,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136555350] [2021-05-02 20:11:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:22,464 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:11:22,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487579072] [2021-05-02 20:11:22,464 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 20:11:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:22,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:11:22,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:11:22,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,586 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 20:11:22,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:22,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136555350] [2021-05-02 20:11:22,586 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:11:22,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487579072] [2021-05-02 20:11:22,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487579072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:11:22,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:11:22,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 20:11:22,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879262141] [2021-05-02 20:11:22,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:11:22,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:22,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:11:22,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:11:22,587 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:22,608 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-05-02 20:11:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 20:11:22,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2021-05-02 20:11:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:22,609 INFO L225 Difference]: With dead ends: 34 [2021-05-02 20:11:22,609 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 20:11:22,609 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:11:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 20:11:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-05-02 20:11:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:11:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-05-02 20:11:22,612 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 26 [2021-05-02 20:11:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:22,612 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-05-02 20:11:22,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-05-02 20:11:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 20:11:22,612 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:22,613 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:22,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:22,830 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:22,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1663216184, now seen corresponding path program 1 times [2021-05-02 20:11:22,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:22,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849525709] [2021-05-02 20:11:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:22,840 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:11:22,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112706639] [2021-05-02 20:11:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 20:11:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:22,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:11:22,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:11:22,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:22,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,037 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 20:11:23,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:23,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849525709] [2021-05-02 20:11:23,037 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:11:23,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112706639] [2021-05-02 20:11:23,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112706639] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:11:23,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:11:23,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:11:23,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601166625] [2021-05-02 20:11:23,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:11:23,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:23,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:11:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:11:23,039 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 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 20:11:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:23,142 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-05-02 20:11:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:11:23,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 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 26 [2021-05-02 20:11:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:23,145 INFO L225 Difference]: With dead ends: 43 [2021-05-02 20:11:23,145 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 20:11:23,146 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:11:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 20:11:23,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-05-02 20:11:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:11:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-05-02 20:11:23,159 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 26 [2021-05-02 20:11:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:23,159 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-05-02 20:11:23,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 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 20:11:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-05-02 20:11:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:11:23,161 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:23,161 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:23,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:23,376 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:23,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:23,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1664227005, now seen corresponding path program 1 times [2021-05-02 20:11:23,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:23,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029327094] [2021-05-02 20:11:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:23,391 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:11:23,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405331542] [2021-05-02 20:11:23,392 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 20:11:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:23,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:11:23,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:11:23,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:11:23,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:23,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029327094] [2021-05-02 20:11:23,529 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:11:23,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405331542] [2021-05-02 20:11:23,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405331542] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:11:23,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:11:23,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 20:11:23,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166617250] [2021-05-02 20:11:23,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:11:23,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:11:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:11:23,530 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:23,557 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-05-02 20:11:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:11:23,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-05-02 20:11:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:23,560 INFO L225 Difference]: With dead ends: 43 [2021-05-02 20:11:23,560 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 20:11:23,560 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:11:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 20:11:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-02 20:11:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:11:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 20:11:23,563 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 28 [2021-05-02 20:11:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:23,563 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 20:11:23,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 20:11:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 20:11:23,564 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:23,564 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:23,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:23,773 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1687306486, now seen corresponding path program 1 times [2021-05-02 20:11:23,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:23,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964267683] [2021-05-02 20:11:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:23,782 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:11:23,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647757133] [2021-05-02 20:11:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:23,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:11:23,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:11:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:11:23,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:23,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964267683] [2021-05-02 20:11:23,974 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:11:23,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647757133] [2021-05-02 20:11:23,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647757133] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:11:23,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:11:23,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:11:23,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177345798] [2021-05-02 20:11:23,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:11:23,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:23,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:11:23,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:11:23,975 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:24,132 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2021-05-02 20:11:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:11:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 20:11:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:24,133 INFO L225 Difference]: With dead ends: 61 [2021-05-02 20:11:24,133 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 20:11:24,134 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:11:24,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 20:11:24,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2021-05-02 20:11:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:11:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 20:11:24,138 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2021-05-02 20:11:24,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:24,138 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 20:11:24,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:11:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 20:11:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 20:11:24,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:24,139 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:24,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:11:24,355 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:24,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:24,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1553698658, now seen corresponding path program 1 times [2021-05-02 20:11:24,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:24,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237346042] [2021-05-02 20:11:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:24,363 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:11:24,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213420523] [2021-05-02 20:11:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:24,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 20:11:24,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:11:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:11:24,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:24,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237346042] [2021-05-02 20:11:24,469 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:11:24,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213420523] [2021-05-02 20:11:24,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213420523] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:11:24,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:11:24,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:11:24,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227504729] [2021-05-02 20:11:24,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:11:24,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:11:24,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:11:24,471 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:11:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:24,482 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-05-02 20:11:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:11:24,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-05-02 20:11:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:24,485 INFO L225 Difference]: With dead ends: 46 [2021-05-02 20:11:24,485 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 20:11:24,485 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:11:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 20:11:24,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 20:11:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:11:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-05-02 20:11:24,499 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 35 [2021-05-02 20:11:24,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:24,499 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-05-02 20:11:24,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:11:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-05-02 20:11:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 20:11:24,500 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:11:24,500 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:11:24,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:24,722 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:11:24,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:11:24,723 INFO L82 PathProgramCache]: Analyzing trace with hash 402759474, now seen corresponding path program 1 times [2021-05-02 20:11:24,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:11:24,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36098512] [2021-05-02 20:11:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:11:24,730 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:11:24,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713470405] [2021-05-02 20:11:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:11:24,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:11:24,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:11:24,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:11:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 20:11:24,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:11:24,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36098512] [2021-05-02 20:11:24,879 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:11:24,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713470405] [2021-05-02 20:11:24,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713470405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:11:24,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:11:24,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:11:24,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361914834] [2021-05-02 20:11:24,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:11:24,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:11:24,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:11:24,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:11:24,880 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:11:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:11:24,901 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-02 20:11:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:11:24,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2021-05-02 20:11:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:11:24,902 INFO L225 Difference]: With dead ends: 23 [2021-05-02 20:11:24,902 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:11:24,902 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:11:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:11:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:11:24,902 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 20:11:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:11:24,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-05-02 20:11:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:11:24,903 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:11:24,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:11:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:11:24,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:11:25,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:11:25,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:11:25 BasicIcfg [2021-05-02 20:11:25,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:11:25,123 INFO L168 Benchmark]: Toolchain (without parser) took 4031.65 ms. Allocated memory was 205.5 MB in the beginning and 272.6 MB in the end (delta: 67.1 MB). Free memory was 171.0 MB in the beginning and 205.7 MB in the end (delta: -34.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:11:25,123 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 205.5 MB. Free memory is still 187.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:11:25,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.15 ms. Allocated memory is still 205.5 MB. Free memory was 170.8 MB in the beginning and 188.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:11:25,124 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 205.5 MB. Free memory was 188.4 MB in the beginning and 186.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 20:11:25,124 INFO L168 Benchmark]: RCFGBuilder took 218.60 ms. Allocated memory is still 205.5 MB. Free memory was 186.9 MB in the beginning and 171.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:11:25,124 INFO L168 Benchmark]: IcfgTransformer took 12.29 ms. Allocated memory is still 205.5 MB. Free memory was 171.1 MB in the beginning and 169.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:11:25,124 INFO L168 Benchmark]: TraceAbstraction took 3538.35 ms. Allocated memory was 205.5 MB in the beginning and 272.6 MB in the end (delta: 67.1 MB). Free memory was 169.0 MB in the beginning and 205.7 MB in the end (delta: -36.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-05-02 20:11:25,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 205.5 MB. Free memory is still 187.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 225.15 ms. Allocated memory is still 205.5 MB. Free memory was 170.8 MB in the beginning and 188.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 205.5 MB. Free memory was 188.4 MB in the beginning and 186.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 218.60 ms. Allocated memory is still 205.5 MB. Free memory was 186.9 MB in the beginning and 171.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 12.29 ms. Allocated memory is still 205.5 MB. Free memory was 171.1 MB in the beginning and 169.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3538.35 ms. Allocated memory was 205.5 MB in the beginning and 272.6 MB in the end (delta: 67.1 MB). Free memory was 169.0 MB in the beginning and 205.7 MB in the end (delta: -36.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3508.1ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 12.5ms, AutomataDifference: 464.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 236 SDtfs, 126 SDslu, 533 SDs, 0 SdLazy, 293 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 223.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 273.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 73.7ms SsaConstructionTime, 153.8ms SatisfiabilityAnalysisTime, 786.3ms InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 SizeOfPredicates, 15 NumberOfNonLiveVariables, 854 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 40/48 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...