/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/loop-zilu/benchmark20_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 16:58:13,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 16:58:13,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 16:58:13,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-23 16:58:13,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 16:58:13,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 16:58:13,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 16:58:13,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 16:58:13,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 16:58:13,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 16:58:13,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 16:58:13,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 16:58:13,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 16:58:13,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 16:58:13,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 16:58:13,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 16:58:13,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 16:58:13,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 16:58:13,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 16:58:13,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 16:58:13,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 16:58:13,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 16:58:13,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 16:58:13,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 16:58:13,220 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 16:58:13,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 16:58:13,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 16:58:13,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 16:58:13,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 16:58:13,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 16:58:13,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:58:13,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 16:58:13,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 16:58:13,222 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 16:58:13,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 16:58:13,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 16:58:13,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 16:58:13,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 16:58:13,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 16:58:13,426 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 16:58:13,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2022-02-23 16:58:13,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5589ac8ed/7d9872d161054510bea42b39e61cb47f/FLAG9400f772a [2022-02-23 16:58:13,823 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 16:58:13,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2022-02-23 16:58:13,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5589ac8ed/7d9872d161054510bea42b39e61cb47f/FLAG9400f772a [2022-02-23 16:58:14,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5589ac8ed/7d9872d161054510bea42b39e61cb47f [2022-02-23 16:58:14,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 16:58:14,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 16:58:14,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 16:58:14,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 16:58:14,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 16:58:14,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebbed14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14, skipping insertion in model container [2022-02-23 16:58:14,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 16:58:14,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 16:58:14,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i[873,886] [2022-02-23 16:58:14,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:58:14,438 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 16:58:14,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i[873,886] [2022-02-23 16:58:14,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:58:14,459 INFO L208 MainTranslator]: Completed translation [2022-02-23 16:58:14,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14 WrapperNode [2022-02-23 16:58:14,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 16:58:14,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 16:58:14,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 16:58:14,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 16:58:14,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 16:58:14,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 16:58:14,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 16:58:14,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 16:58:14,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:14,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:58:14,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:58:14,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 16:58:14,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 16:58:14,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 16:58:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 16:58:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 16:58:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 16:58:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 16:58:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 16:58:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-23 16:58:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-23 16:58:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 16:58:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 16:58:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 16:58:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-23 16:58:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 16:58:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 16:58:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 16:58:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 16:58:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 16:58:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 16:58:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 16:58:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 16:58:14,614 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 16:58:14,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 16:58:14,719 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 16:58:14,723 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 16:58:14,723 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 16:58:14,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:14 BoogieIcfgContainer [2022-02-23 16:58:14,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 16:58:14,725 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 16:58:14,725 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 16:58:14,725 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 16:58:14,727 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:14" (1/1) ... [2022-02-23 16:58:16,128 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-23 16:58:16,128 INFO L91 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~i~0_3 v_main_~sum~0_2) v_main_~sum~0_1) (< v_main_~i~0_3 v_main_~n~0_2) (= v_main_~i~0_2 (+ v_main_~i~0_3 1))) InVars {main_~sum~0=v_main_~sum~0_2, main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_2} OutVars{main_~sum~0=v_main_~sum~0_1, main_#t~post4=|v_main_#t~post4_1|, main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_2} AuxVars[] AssignedVars[main_~sum~0, main_#t~post4, main_~i~0] to Formula: (let ((.cse1 (* (- 1) v_main_~i~0_3)) (.cse2 (* (- 1) v_main_~i~0_2))) (or (and (not (< v_main_~i~0_3 v_main_~n~0_2)) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) (= v_main_~sum~0_2 v_main_~sum~0_1) (= v_main_~i~0_3 v_main_~i~0_2)) (let ((.cse0 (div (+ .cse2 v_main_~i~0_3 1) (- 2)))) (and (= (mod (+ v_main_~i~0_3 v_main_~i~0_2 1) 2) 0) (= (+ .cse0 v_main_~i~0_3 (* (* .cse0 .cse0) 2) (* 2 (* .cse0 v_main_~i~0_3)) v_main_~sum~0_2) v_main_~sum~0_1) (< .cse0 (+ (div (+ (- 1) v_main_~n~0_2 .cse1) 2) 1)) (<= 0 .cse0))) (let ((.cse3 (div (+ .cse2 v_main_~i~0_3) (- 2)))) (and (= (+ (* (* .cse3 .cse3) 2) (* 2 (* v_main_~i~0_3 .cse3)) v_main_~sum~0_2) (+ .cse3 v_main_~sum~0_1)) (< 0 .cse3) (< .cse3 (+ (div (+ (- 2) v_main_~n~0_2 .cse1) 2) 2)) (= (mod (+ v_main_~i~0_3 v_main_~i~0_2) 2) 0))))) InVars {main_~i~0=v_main_~i~0_3, main_#t~post4=|v_main_#t~post4_3|, main_~n~0=v_main_~n~0_2, main_~sum~0=v_main_~sum~0_2} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_2, main_~sum~0=v_main_~sum~0_1} AuxVars[] AssignedVars[main_~sum~0, main_#t~post4, main_~i~0] [2022-02-23 16:58:16,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:58:16 BasicIcfg [2022-02-23 16:58:16,132 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 16:58:16,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 16:58:16,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 16:58:16,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 16:58:16,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:58:14" (1/4) ... [2022-02-23 16:58:16,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13826548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:58:16, skipping insertion in model container [2022-02-23 16:58:16,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:14" (2/4) ... [2022-02-23 16:58:16,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13826548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:58:16, skipping insertion in model container [2022-02-23 16:58:16,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:14" (3/4) ... [2022-02-23 16:58:16,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13826548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:58:16, skipping insertion in model container [2022-02-23 16:58:16,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:58:16" (4/4) ... [2022-02-23 16:58:16,137 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.iJordan [2022-02-23 16:58:16,140 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 16:58:16,140 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 16:58:16,163 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 16:58:16,167 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 16:58:16,167 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 16:58:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 16:58:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 16:58:16,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:58:16,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:58:16,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:58:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:58:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-02-23 16:58:16,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:58:16,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113770054] [2022-02-23 16:58:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:58:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:58:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:16,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:58:16,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113770054] [2022-02-23 16:58:16,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113770054] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 16:58:16,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 16:58:16,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 16:58:16,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011038311] [2022-02-23 16:58:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 16:58:16,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 16:58:16,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:58:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 16:58:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 16:58:16,315 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:58:16,333 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-02-23 16:58:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 16:58:16,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-23 16:58:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:58:16,339 INFO L225 Difference]: With dead ends: 20 [2022-02-23 16:58:16,339 INFO L226 Difference]: Without dead ends: 13 [2022-02-23 16:58:16,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 16:58:16,342 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:58:16,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 16:58:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-23 16:58:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-23 16:58:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-23 16:58:16,372 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-02-23 16:58:16,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:58:16,373 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-23 16:58:16,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-23 16:58:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 16:58:16,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:58:16,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:58:16,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 16:58:16,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:58:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:58:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-02-23 16:58:16,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:58:16,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819706460] [2022-02-23 16:58:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:58:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:58:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:16,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:58:16,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819706460] [2022-02-23 16:58:16,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819706460] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 16:58:16,489 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 16:58:16,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 16:58:16,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366932722] [2022-02-23 16:58:16,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 16:58:16,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 16:58:16,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:58:16,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 16:58:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 16:58:16,491 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:58:16,556 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-02-23 16:58:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 16:58:16,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-23 16:58:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:58:16,557 INFO L225 Difference]: With dead ends: 17 [2022-02-23 16:58:16,557 INFO L226 Difference]: Without dead ends: 14 [2022-02-23 16:58:16,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-23 16:58:16,558 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:58:16,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 16:58:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-23 16:58:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-23 16:58:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-23 16:58:16,561 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-23 16:58:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:58:16,561 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-23 16:58:16,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-23 16:58:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-23 16:58:16,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:58:16,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:58:16,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 16:58:16,562 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:58:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:58:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-02-23 16:58:16,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:58:16,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003839383] [2022-02-23 16:58:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:16,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:58:16,578 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 16:58:16,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226292972] [2022-02-23 16:58:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:58:16,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:58:16,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 16:58:16,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 16:58:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:16,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 16:58:16,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:58:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:16,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:58:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:21,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:58:21,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003839383] [2022-02-23 16:58:21,208 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 16:58:21,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226292972] [2022-02-23 16:58:21,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226292972] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:58:21,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 16:58:21,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-02-23 16:58:21,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56172349] [2022-02-23 16:58:21,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 16:58:21,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 16:58:21,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:58:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 16:58:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-23 16:58:21,210 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:58:21,232 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-02-23 16:58:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 16:58:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-23 16:58:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:58:21,233 INFO L225 Difference]: With dead ends: 18 [2022-02-23 16:58:21,233 INFO L226 Difference]: Without dead ends: 15 [2022-02-23 16:58:21,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-23 16:58:21,234 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:58:21,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-02-23 16:58:21,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-23 16:58:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-23 16:58:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-02-23 16:58:21,237 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-02-23 16:58:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:58:21,237 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-02-23 16:58:21,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-02-23 16:58:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-23 16:58:21,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:58:21,237 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:58:21,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 16:58:21,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:58:21,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:58:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:58:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash 938486524, now seen corresponding path program 2 times [2022-02-23 16:58:21,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:58:21,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651072640] [2022-02-23 16:58:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:21,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:58:21,456 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 16:58:21,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264131838] [2022-02-23 16:58:21,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 16:58:21,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:58:21,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:58:21,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 16:58:21,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 16:58:21,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 16:58:21,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 16:58:21,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-23 16:58:21,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:58:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:23,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:58:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:35,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:58:35,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651072640] [2022-02-23 16:58:35,474 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 16:58:35,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264131838] [2022-02-23 16:58:35,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264131838] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:58:35,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 16:58:35,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-02-23 16:58:35,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143741427] [2022-02-23 16:58:35,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 16:58:35,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 16:58:35,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:58:35,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 16:58:35,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2022-02-23 16:58:35,481 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:37,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-23 16:58:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:58:37,326 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-02-23 16:58:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 16:58:37,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-02-23 16:58:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:58:37,327 INFO L225 Difference]: With dead ends: 13 [2022-02-23 16:58:37,327 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 16:58:37,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2022-02-23 16:58:37,328 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-23 16:58:37,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 4 Unchecked, 1.8s Time] [2022-02-23 16:58:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 16:58:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 16:58:37,328 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) [2022-02-23 16:58:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 16:58:37,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-02-23 16:58:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:58:37,329 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 16:58:37,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 16:58:37,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 16:58:37,331 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 16:58:37,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-23 16:58:37,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-23 16:58:37,544 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-02-23 16:58:37,545 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 16:58:37,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:58:37 BasicIcfg [2022-02-23 16:58:37,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 16:58:37,547 INFO L158 Benchmark]: Toolchain (without parser) took 23289.62ms. Allocated memory was 205.5MB in the beginning and 254.8MB in the end (delta: 49.3MB). Free memory was 156.1MB in the beginning and 177.8MB in the end (delta: -21.7MB). Peak memory consumption was 28.5MB. Max. memory is 8.0GB. [2022-02-23 16:58:37,547 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 172.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 16:58:37,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.33ms. Allocated memory is still 205.5MB. Free memory was 155.9MB in the beginning and 183.0MB in the end (delta: -27.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-23 16:58:37,547 INFO L158 Benchmark]: Boogie Preprocessor took 25.06ms. Allocated memory is still 205.5MB. Free memory was 183.0MB in the beginning and 181.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 16:58:37,548 INFO L158 Benchmark]: RCFGBuilder took 238.70ms. Allocated memory is still 205.5MB. Free memory was 181.5MB in the beginning and 171.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 16:58:37,548 INFO L158 Benchmark]: IcfgTransformer took 1407.23ms. Allocated memory is still 205.5MB. Free memory was 171.3MB in the beginning and 155.3MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-23 16:58:37,548 INFO L158 Benchmark]: TraceAbstraction took 21413.78ms. Allocated memory was 205.5MB in the beginning and 254.8MB in the end (delta: 49.3MB). Free memory was 154.8MB in the beginning and 177.8MB in the end (delta: -23.0MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. [2022-02-23 16:58:37,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 172.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.33ms. Allocated memory is still 205.5MB. Free memory was 155.9MB in the beginning and 183.0MB in the end (delta: -27.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.06ms. Allocated memory is still 205.5MB. Free memory was 183.0MB in the beginning and 181.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.70ms. Allocated memory is still 205.5MB. Free memory was 181.5MB in the beginning and 171.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 1407.23ms. Allocated memory is still 205.5MB. Free memory was 171.3MB in the beginning and 155.3MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 21413.78ms. Allocated memory was 205.5MB in the beginning and 254.8MB in the end (delta: 49.3MB). Free memory was 154.8MB in the beginning and 177.8MB in the end (delta: -23.0MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 146 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 50 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 3 QuantifiedInterpolants, 691 SizeOfPredicates, 16 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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! [2022-02-23 16:58:37,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...