/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/dijkstra-u_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 19:48:43,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 19:48:43,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 19:48:43,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 19:48:43,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 19:48:43,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 19:48:43,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 19:48:43,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 19:48:43,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 19:48:43,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 19:48:43,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 19:48:43,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 19:48:43,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 19:48:43,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 19:48:43,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 19:48:43,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 19:48:43,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 19:48:43,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 19:48:43,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 19:48:43,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 19:48:43,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 19:48:43,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 19:48:43,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 19:48:43,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 19:48:43,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 19:48:43,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 19:48:43,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 19:48:43,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 19:48:43,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 19:48:43,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 19:48:43,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 19:48:43,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 19:48:43,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 19:48:43,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 19:48:43,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 19:48:43,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 19:48:43,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 19:48:43,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 19:48:43,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 19:48:43,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 19:48:43,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 19:48:43,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 19:48:43,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 19:48:43,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 19:48:43,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 19:48:43,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 19:48:43,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 19:48:43,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:48:43,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 19:48:43,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 19:48:43,116 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 19:48:43,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 19:48:43,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 19:48:43,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 19:48:43,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 19:48:43,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 19:48:43,367 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 19:48:43,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-05-02 19:48:43,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fac33d28/ec93328059194d909042bbbaa751b309/FLAG91772ff69 [2021-05-02 19:48:43,746 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 19:48:43,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-05-02 19:48:43,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fac33d28/ec93328059194d909042bbbaa751b309/FLAG91772ff69 [2021-05-02 19:48:44,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fac33d28/ec93328059194d909042bbbaa751b309 [2021-05-02 19:48:44,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 19:48:44,152 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 19:48:44,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 19:48:44,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 19:48:44,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 19:48:44,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edfd999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44, skipping insertion in model container [2021-05-02 19:48:44,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 19:48:44,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 19:48:44,252 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/dijkstra-u_unwindbound2.c[533,546] [2021-05-02 19:48:44,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:48:44,280 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 19:48:44,296 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/dijkstra-u_unwindbound2.c[533,546] [2021-05-02 19:48:44,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:48:44,326 INFO L208 MainTranslator]: Completed translation [2021-05-02 19:48:44,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44 WrapperNode [2021-05-02 19:48:44,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 19:48:44,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 19:48:44,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 19:48:44,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 19:48:44,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 19:48:44,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 19:48:44,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 19:48:44,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 19:48:44,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (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 19:48:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 19:48:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 19:48:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 19:48:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 19:48:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 19:48:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 19:48:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 19:48:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 19:48:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 19:48:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 19:48:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 19:48:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 19:48:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 19:48:44,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 19:48:44,717 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 19:48:44,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:48:44 BoogieIcfgContainer [2021-05-02 19:48:44,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 19:48:44,719 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 19:48:44,719 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 19:48:44,719 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 19:48:44,721 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:48:44" (1/1) ... [2021-05-02 19:48:44,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:48:44 BasicIcfg [2021-05-02 19:48:44,750 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 19:48:44,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 19:48:44,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 19:48:44,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 19:48:44,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 07:48:44" (1/4) ... [2021-05-02 19:48:44,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357a2301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:48:44, skipping insertion in model container [2021-05-02 19:48:44,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:48:44" (2/4) ... [2021-05-02 19:48:44,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357a2301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:48:44, skipping insertion in model container [2021-05-02 19:48:44,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:48:44" (3/4) ... [2021-05-02 19:48:44,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357a2301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:48:44, skipping insertion in model container [2021-05-02 19:48:44,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:48:44" (4/4) ... [2021-05-02 19:48:44,755 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.cJordan [2021-05-02 19:48:44,758 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 19:48:44,777 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 19:48:44,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 19:48:44,815 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 19:48:44,815 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 19:48:44,815 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 19:48:44,815 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 19:48:44,815 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 19:48:44,815 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 19:48:44,815 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 19:48:44,815 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 19:48:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 19:48:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 19:48:44,830 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:48:44,830 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:48:44,831 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:48:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:48:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash -460462115, now seen corresponding path program 1 times [2021-05-02 19:48:44,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:48:44,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100658152] [2021-05-02 19:48:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:48:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:45,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:48:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:48:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:48:45,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:48:45,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100658152] [2021-05-02 19:48:45,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100658152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:48:45,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:48:45,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 19:48:45,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535724322] [2021-05-02 19:48:45,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 19:48:45,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:48:45,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 19:48:45,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:48:45,089 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 19:48:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:48:51,494 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2021-05-02 19:48:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 19:48:51,496 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 19:48:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:48:51,500 INFO L225 Difference]: With dead ends: 40 [2021-05-02 19:48:51,500 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 19:48:51,501 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:48:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 19:48:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-02 19:48:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 19:48:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2021-05-02 19:48:51,522 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 18 [2021-05-02 19:48:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:48:51,523 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2021-05-02 19:48:51,523 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 19:48:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2021-05-02 19:48:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 19:48:51,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:48:51,523 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:48:51,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 19:48:51,524 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:48:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:48:51,524 INFO L82 PathProgramCache]: Analyzing trace with hash -889932734, now seen corresponding path program 1 times [2021-05-02 19:48:51,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:48:51,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632083588] [2021-05-02 19:48:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:48:51,535 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 19:48:51,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941858476] [2021-05-02 19:48:51,535 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 19:48:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:51,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 19:48:51,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:48:51,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:51,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:51,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:51,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:51,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:48:51,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:48:51,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632083588] [2021-05-02 19:48:51,680 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 19:48:51,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941858476] [2021-05-02 19:48:51,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941858476] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:48:51,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:48:51,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 19:48:51,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563205987] [2021-05-02 19:48:51,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 19:48:51,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:48:51,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 19:48:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 19:48:51,683 INFO L87 Difference]: Start difference. First operand 34 states and 46 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:48:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:48:51,694 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-05-02 19:48:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 19:48:51,695 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 19:48:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:48:51,696 INFO L225 Difference]: With dead ends: 36 [2021-05-02 19:48:51,696 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 19:48:51,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 19:48:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 19:48:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 19:48:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 19:48:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2021-05-02 19:48:51,702 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 20 [2021-05-02 19:48:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:48:51,702 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2021-05-02 19:48:51,702 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:48:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2021-05-02 19:48:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 19:48:51,703 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:48:51,703 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:48:51,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 19:48:51,906 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:48:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:48:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1699853977, now seen corresponding path program 1 times [2021-05-02 19:48:51,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:48:51,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68202593] [2021-05-02 19:48:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:48:51,927 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 19:48:51,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475523785] [2021-05-02 19:48:51,927 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 19:48:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:51,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 19:48:51,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:48:52,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:48:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:48:52,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:48:52,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68202593] [2021-05-02 19:48:52,093 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 19:48:52,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475523785] [2021-05-02 19:48:52,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475523785] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:48:52,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:48:52,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 19:48:52,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145185955] [2021-05-02 19:48:52,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 19:48:52,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:48:52,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 19:48:52,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 19:48:52,096 INFO L87 Difference]: Start difference. First operand 36 states and 48 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:48:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:48:52,119 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2021-05-02 19:48:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 19:48:52,121 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-05-02 19:48:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:48:52,121 INFO L225 Difference]: With dead ends: 40 [2021-05-02 19:48:52,121 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 19:48:52,122 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 19:48:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 19:48:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-05-02 19:48:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 19:48:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2021-05-02 19:48:52,125 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 21 [2021-05-02 19:48:52,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:48:52,125 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2021-05-02 19:48:52,126 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:48:52,126 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2021-05-02 19:48:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 19:48:52,126 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:48:52,126 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:48:52,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:48:52,333 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:48:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:48:52,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1700986035, now seen corresponding path program 1 times [2021-05-02 19:48:52,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:48:52,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654762118] [2021-05-02 19:48:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:48:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:48:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:48:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:48:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:48:52,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:48:52,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654762118] [2021-05-02 19:48:52,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654762118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:48:52,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:48:52,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 19:48:52,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728703588] [2021-05-02 19:48:52,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 19:48:52,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:48:52,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 19:48:52,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 19:48:52,577 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 19:49:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:49:08,073 INFO L93 Difference]: Finished difference Result 53 states and 73 transitions. [2021-05-02 19:49:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 19:49:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-05-02 19:49:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:49:08,075 INFO L225 Difference]: With dead ends: 53 [2021-05-02 19:49:08,075 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 19:49:08,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 215.8ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-05-02 19:49:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 19:49:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-05-02 19:49:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 19:49:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2021-05-02 19:49:08,083 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 21 [2021-05-02 19:49:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:49:08,083 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2021-05-02 19:49:08,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 19:49:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2021-05-02 19:49:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 19:49:08,084 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:49:08,084 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:49:08,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 19:49:08,084 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:49:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:49:08,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1908885951, now seen corresponding path program 1 times [2021-05-02 19:49:08,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:49:08,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219311505] [2021-05-02 19:49:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:49:08,091 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 19:49:08,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324001285] [2021-05-02 19:49:08,091 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 19:49:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:49:08,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 19:49:08,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:49:08,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:49:08,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:49:08,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219311505] [2021-05-02 19:49:08,219 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 19:49:08,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324001285] [2021-05-02 19:49:08,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324001285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:49:08,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 19:49:08,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 19:49:08,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387797737] [2021-05-02 19:49:08,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 19:49:08,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:49:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 19:49:08,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 19:49:08,223 INFO L87 Difference]: Start difference. First operand 50 states and 68 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:49:08,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:49:08,254 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2021-05-02 19:49:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 19:49:08,255 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-05-02 19:49:08,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:49:08,255 INFO L225 Difference]: With dead ends: 52 [2021-05-02 19:49:08,255 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 19:49:08,256 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 19:49:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 19:49:08,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-02 19:49:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 19:49:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2021-05-02 19:49:08,260 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 23 [2021-05-02 19:49:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:49:08,260 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2021-05-02 19:49:08,260 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:49:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2021-05-02 19:49:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 19:49:08,261 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:49:08,261 INFO L523 BasicCegarLoop]: trace histogram [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 19:49:08,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:49:08,469 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:49:08,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:49:08,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1731080004, now seen corresponding path program 1 times [2021-05-02 19:49:08,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:49:08,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713562870] [2021-05-02 19:49:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:49:08,491 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 19:49:08,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890341891] [2021-05-02 19:49:08,492 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 19:49:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:49:08,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 19:49:08,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:49:08,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 19:49:08,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:49:08,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713562870] [2021-05-02 19:49:08,786 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 19:49:08,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890341891] [2021-05-02 19:49:08,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890341891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:49:08,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:49:08,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 19:49:08,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055756269] [2021-05-02 19:49:08,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 19:49:08,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:49:08,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 19:49:08,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 19:49:08,787 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 19:49:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:49:16,197 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2021-05-02 19:49:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 19:49:16,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-05-02 19:49:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:49:16,199 INFO L225 Difference]: With dead ends: 68 [2021-05-02 19:49:16,199 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 19:49:16,199 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 19:49:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 19:49:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-05-02 19:49:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 26 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 19:49:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2021-05-02 19:49:16,204 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 24 [2021-05-02 19:49:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:49:16,205 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2021-05-02 19:49:16,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 19:49:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2021-05-02 19:49:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 19:49:16,205 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:49:16,205 INFO L523 BasicCegarLoop]: trace histogram [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 19:49:16,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:49:16,411 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:49:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:49:16,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1729947946, now seen corresponding path program 1 times [2021-05-02 19:49:16,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:49:16,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802614243] [2021-05-02 19:49:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:49:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:49:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:49:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:49:16,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:49:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:49:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:49:16,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:49:16,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802614243] [2021-05-02 19:49:16,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802614243] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:49:16,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012294359] [2021-05-02 19:49:16,546 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 19:49:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:49:16,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 19:49:16,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:49:16,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:49:16,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012294359] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:49:16,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-02 19:49:16,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2021-05-02 19:49:16,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868375280] [2021-05-02 19:49:16,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 19:49:16,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:49:16,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 19:49:16,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-02 19:49:16,685 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:49:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:49:16,770 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-05-02 19:49:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 19:49:16,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-05-02 19:49:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:49:16,771 INFO L225 Difference]: With dead ends: 47 [2021-05-02 19:49:16,771 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 19:49:16,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 87.6ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-02 19:49:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 19:49:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 19:49:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 19:49:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-05-02 19:49:16,774 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 24 [2021-05-02 19:49:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:49:16,774 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-05-02 19:49:16,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 19:49:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-05-02 19:49:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 19:49:16,774 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:49:16,774 INFO L523 BasicCegarLoop]: trace histogram [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 19:49:16,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-02 19:49:16,975 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:49:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:49:16,976 INFO L82 PathProgramCache]: Analyzing trace with hash 526289857, now seen corresponding path program 1 times [2021-05-02 19:49:16,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:49:16,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149215936] [2021-05-02 19:49:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:49:16,985 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 19:49:16,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543831592] [2021-05-02 19:49:16,985 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 19:49:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:49:17,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 19:49:17,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:49:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:17,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:17,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:17,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:49:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:49:17,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:49:17,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149215936] [2021-05-02 19:49:17,184 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 19:49:17,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543831592] [2021-05-02 19:49:17,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543831592] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:49:17,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:49:17,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 19:49:17,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969553999] [2021-05-02 19:49:17,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 19:49:17,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:49:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 19:49:17,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 19:49:17,185 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 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 19:49:19,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:49:19,481 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-05-02 19:49:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 19:49:19,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 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 26 [2021-05-02 19:49:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:49:19,482 INFO L225 Difference]: With dead ends: 49 [2021-05-02 19:49:19,482 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 19:49:19,482 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 19:49:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 19:49:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 19:49:19,482 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 19:49:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 19:49:19,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-05-02 19:49:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:49:19,483 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 19:49:19,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 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 19:49:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 19:49:19,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 19:49:19,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:49:19,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:49:19 BasicIcfg [2021-05-02 19:49:19,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 19:49:19,687 INFO L168 Benchmark]: Toolchain (without parser) took 35535.25 ms. Allocated memory was 180.4 MB in the beginning and 217.1 MB in the end (delta: 36.7 MB). Free memory was 146.2 MB in the beginning and 176.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2021-05-02 19:49:19,688 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 180.4 MB. Free memory is still 162.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:49:19,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.48 ms. Allocated memory is still 180.4 MB. Free memory was 146.0 MB in the beginning and 162.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-02 19:49:19,688 INFO L168 Benchmark]: Boogie Preprocessor took 32.33 ms. Allocated memory is still 180.4 MB. Free memory was 162.7 MB in the beginning and 161.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:49:19,688 INFO L168 Benchmark]: RCFGBuilder took 357.98 ms. Allocated memory is still 180.4 MB. Free memory was 161.2 MB in the beginning and 143.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-05-02 19:49:19,688 INFO L168 Benchmark]: IcfgTransformer took 31.08 ms. Allocated memory is still 180.4 MB. Free memory was 143.9 MB in the beginning and 142.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:49:19,688 INFO L168 Benchmark]: TraceAbstraction took 34936.40 ms. Allocated memory was 180.4 MB in the beginning and 217.1 MB in the end (delta: 36.7 MB). Free memory was 141.8 MB in the beginning and 176.0 MB in the end (delta: -34.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-05-02 19:49:19,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 180.4 MB. Free memory is still 162.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 173.48 ms. Allocated memory is still 180.4 MB. Free memory was 146.0 MB in the beginning and 162.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.33 ms. Allocated memory is still 180.4 MB. Free memory was 162.7 MB in the beginning and 161.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 357.98 ms. Allocated memory is still 180.4 MB. Free memory was 161.2 MB in the beginning and 143.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 31.08 ms. Allocated memory is still 180.4 MB. Free memory was 143.9 MB in the beginning and 142.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 34936.40 ms. Allocated memory was 180.4 MB in the beginning and 217.1 MB in the end (delta: 36.7 MB). Free memory was 141.8 MB in the beginning and 176.0 MB in the end (delta: -34.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34870.8ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 12.0ms, AutomataDifference: 31793.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 349 SDtfs, 140 SDslu, 801 SDs, 0 SdLazy, 333 SolverSat, 112 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 29036.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 515.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=6, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 70.6ms SsaConstructionTime, 326.9ms SatisfiabilityAnalysisTime, 1049.3ms InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 800 SizeOfPredicates, 12 NumberOfNonLiveVariables, 745 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 9/13 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...