/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/loops-crafted-1/sum_natnum.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 04:20:24,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 04:20:24,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 04:20:24,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 04:20:24,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 04:20:24,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 04:20:24,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 04:20:24,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 04:20:24,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 04:20:24,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 04:20:24,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 04:20:24,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 04:20:24,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 04:20:24,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 04:20:24,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 04:20:24,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 04:20:24,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 04:20:24,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 04:20:24,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 04:20:24,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 04:20:24,470 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 04:20:24,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 04:20:24,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 04:20:24,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 04:20:24,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 04:20:24,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 04:20:24,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 04:20:24,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 04:20:24,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 04:20:24,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 04:20:24,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 04:20:24,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 04:20:24,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 04:20:24,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 04:20:24,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 04:20:24,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 04:20:24,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 04:20:24,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 04:20:24,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 04:20:24,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 04:20:24,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:20:24,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 04:20:24,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 04:20:24,504 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 04:20:24,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 04:20:24,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 04:20:24,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 04:20:24,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 04:20:24,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 04:20:24,690 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 04:20:24,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sum_natnum.c [2022-03-20 04:20:24,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cdcc0f8/5aadc20f99774a7bb19d0edeffbafdde/FLAG6cbc42c47 [2022-03-20 04:20:25,078 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 04:20:25,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sum_natnum.c [2022-03-20 04:20:25,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cdcc0f8/5aadc20f99774a7bb19d0edeffbafdde/FLAG6cbc42c47 [2022-03-20 04:20:25,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cdcc0f8/5aadc20f99774a7bb19d0edeffbafdde [2022-03-20 04:20:25,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 04:20:25,097 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 04:20:25,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 04:20:25,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 04:20:25,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 04:20:25,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3b5f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25, skipping insertion in model container [2022-03-20 04:20:25,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 04:20:25,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 04:20:25,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sum_natnum.c[458,471] [2022-03-20 04:20:25,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:20:25,307 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 04:20:25,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sum_natnum.c[458,471] [2022-03-20 04:20:25,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:20:25,335 INFO L208 MainTranslator]: Completed translation [2022-03-20 04:20:25,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25 WrapperNode [2022-03-20 04:20:25,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 04:20:25,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 04:20:25,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 04:20:25,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 04:20:25,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 04:20:25,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 04:20:25,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 04:20:25,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 04:20:25,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:20:25,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:20:25,396 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) [2022-03-20 04:20:25,398 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 [2022-03-20 04:20:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 04:20:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 04:20:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 04:20:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 04:20:25,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 04:20:25,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 04:20:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 04:20:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 04:20:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 04:20:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 04:20:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 04:20:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 04:20:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 04:20:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 04:20:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 04:20:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 04:20:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 04:20:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 04:20:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 04:20:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 04:20:25,474 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 04:20:25,475 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 04:20:25,583 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 04:20:25,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 04:20:25,599 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 04:20:25,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:20:25 BoogieIcfgContainer [2022-03-20 04:20:25,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 04:20:25,601 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 04:20:25,601 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 04:20:25,613 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 04:20:25,615 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:20:25" (1/1) ... [2022-03-20 04:20:25,617 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 04:20:30,198 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-20 04:20:30,199 INFO L91 elerationTransformer]: Accelerated Formula: (and (< v_main_~i~0_3 v_~SIZE~0_2) (= (+ v_main_~i~0_2 v_main_~sum~0_2) v_main_~sum~0_1) (= v_main_~i~0_2 (+ v_main_~i~0_3 1))) InVars {~SIZE~0=v_~SIZE~0_2, main_~sum~0=v_main_~sum~0_2, main_~i~0=v_main_~i~0_3} OutVars{~SIZE~0=v_~SIZE~0_2, main_~sum~0=v_main_~sum~0_1, main_~i~0=v_main_~i~0_2} AuxVars[] AssignedVars[main_~sum~0, main_~i~0] to Formula: (let ((.cse1 (* (- 1) v_main_~i~0_3)) (.cse2 (* (- 1) v_main_~i~0_2))) (or (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) (= (+ v_main_~i~0_3 (* (* .cse0 .cse0) 2) (* .cse0 3) (* 2 (* .cse0 v_main_~i~0_3)) v_main_~sum~0_2 1) v_main_~sum~0_1) (< .cse0 (+ (div (+ (- 1) v_~SIZE~0_2 .cse1) 2) 1)) (<= 0 .cse0))) (and (not (< v_main_~i~0_3 v_~SIZE~0_2)) (= v_main_~sum~0_2 v_main_~sum~0_1) (= v_main_~i~0_3 v_main_~i~0_2)) (let ((.cse3 (div (+ .cse2 v_main_~i~0_3) (- 2)))) (and (< 0 .cse3) (< .cse3 (+ 2 (div (+ v_~SIZE~0_2 (- 2) .cse1) 2))) (= (mod (+ v_main_~i~0_3 v_main_~i~0_2) 2) 0) (= (+ .cse3 (* (* .cse3 .cse3) 2) (* 2 (* v_main_~i~0_3 .cse3)) v_main_~sum~0_2) v_main_~sum~0_1))))) InVars {~SIZE~0=v_~SIZE~0_2, main_~i~0=v_main_~i~0_3, main_~sum~0=v_main_~sum~0_2} OutVars{~SIZE~0=v_~SIZE~0_2, main_~i~0=v_main_~i~0_2, main_~sum~0=v_main_~sum~0_1} AuxVars[] AssignedVars[main_~sum~0, main_~i~0] [2022-03-20 04:20:30,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:20:30 BasicIcfg [2022-03-20 04:20:30,203 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 04:20:30,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 04:20:30,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 04:20:30,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 04:20:30,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 04:20:25" (1/4) ... [2022-03-20 04:20:30,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be0ed28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:20:30, skipping insertion in model container [2022-03-20 04:20:30,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:20:25" (2/4) ... [2022-03-20 04:20:30,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be0ed28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:20:30, skipping insertion in model container [2022-03-20 04:20:30,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:20:25" (3/4) ... [2022-03-20 04:20:30,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be0ed28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 04:20:30, skipping insertion in model container [2022-03-20 04:20:30,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:20:30" (4/4) ... [2022-03-20 04:20:30,208 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_natnum.cJordan [2022-03-20 04:20:30,211 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 04:20:30,212 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 04:20:30,237 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 04:20:30,241 INFO L340 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 [2022-03-20 04:20:30,241 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 04:20:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-03-20 04:20:30,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 04:20:30,253 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:20:30,254 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:20:30,254 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:20:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:20:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1627068025, now seen corresponding path program 1 times [2022-03-20 04:20:30,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:20:30,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77308875] [2022-03-20 04:20:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:20:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:20:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:20:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:20:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:20:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:20:30,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:20:30,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77308875] [2022-03-20 04:20:30,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77308875] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:20:30,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:20:30,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 04:20:30,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701556138] [2022-03-20 04:20:30,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:20:30,387 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 04:20:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:20:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 04:20:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 04:20:30,411 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-03-20 04:20:32,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 04:20:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:20:32,454 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-03-20 04:20:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 04:20:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-03-20 04:20:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:20:32,461 INFO L225 Difference]: With dead ends: 19 [2022-03-20 04:20:32,462 INFO L226 Difference]: Without dead ends: 12 [2022-03-20 04:20:32,462 INFO L912 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 [2022-03-20 04:20:32,465 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:20:32,466 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 04:20:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-20 04:20:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-20 04:20:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-03-20 04:20:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-20 04:20:32,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-20 04:20:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:20:32,490 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-20 04:20:32,490 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-03-20 04:20:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-20 04:20:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 04:20:32,491 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:20:32,491 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:20:32,491 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 04:20:32,491 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:20:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:20:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1626144504, now seen corresponding path program 1 times [2022-03-20 04:20:32,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:20:32,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813437296] [2022-03-20 04:20:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:20:32,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:20:32,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:20:32,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126565053] [2022-03-20 04:20:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:20:32,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:20:32,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:20:32,511 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) [2022-03-20 04:20:32,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 04:20:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:20:32,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 04:20:32,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:20:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:20:32,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 04:20:32,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:20:32,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813437296] [2022-03-20 04:20:32,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:20:32,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126565053] [2022-03-20 04:20:32,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126565053] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:20:32,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:20:32,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 04:20:32,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310940594] [2022-03-20 04:20:32,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:20:32,634 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 04:20:32,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:20:32,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 04:20:32,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-20 04:20:32,635 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-03-20 04:20:32,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:20:32,677 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-03-20 04:20:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 04:20:32,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 11 [2022-03-20 04:20:32,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:20:32,679 INFO L225 Difference]: With dead ends: 13 [2022-03-20 04:20:32,679 INFO L226 Difference]: Without dead ends: 13 [2022-03-20 04:20:32,679 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-20 04:20:32,680 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:20:32,680 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 15 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:20:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-20 04:20:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-20 04:20:32,682 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) [2022-03-20 04:20:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-20 04:20:32,683 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-20 04:20:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:20:32,683 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-20 04:20:32,683 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-03-20 04:20:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-20 04:20:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 04:20:32,683 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:20:32,684 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:20:32,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 04:20:32,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:20:32,896 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:20:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:20:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1155848534, now seen corresponding path program 1 times [2022-03-20 04:20:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:20:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952549653] [2022-03-20 04:20:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:20:32,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:20:32,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:20:32,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957674151] [2022-03-20 04:20:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:20:32,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:20:32,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:20:32,912 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) [2022-03-20 04:20:32,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 04:20:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:20:33,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 04:20:33,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:20:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:20:34,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:20:49,956 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse12 (* (- 1) c_main_~i~0))) (let ((.cse6 (div (+ (- 2) .cse12 c_~SIZE~0) 2)) (.cse5 (div (+ (- 1) .cse12 c_~SIZE~0) 2))) (and (or (let ((.cse0 (* (- 1) c_main_~sum~0)) (.cse1 (mod (div (* (+ c_~SIZE~0 1) c_~SIZE~0) 2) 18446744073709551616))) (and (<= (div (+ .cse0 (- 1)) (- 18446744073709551616)) (div (+ .cse0 (- 1) .cse1) (- 18446744073709551616))) (<= (div (+ .cse0 .cse1) (- 18446744073709551616)) (+ (div (+ (- 18446744073709551616) c_main_~sum~0) 18446744073709551616) 1)))) (< c_main_~i~0 c_~SIZE~0)) (let ((.cse2 (+ .cse6 1))) (or (<= .cse2 0) (forall ((aux_div_v_main_~sum~0_9_42 Int) (aux_div_v_main_~i~0_8_49 Int)) (let ((.cse4 (+ (* (* aux_div_v_main_~i~0_8_49 aux_div_v_main_~i~0_8_49) 2) (* 2 (* c_main_~i~0 aux_div_v_main_~i~0_8_49)) aux_div_v_main_~i~0_8_49 c_main_~sum~0)) (.cse3 (* aux_div_v_main_~sum~0_9_42 18446744073709551616))) (or (<= (+ 2 (div (+ (- 2) (* (- 1) c_main_~i~0) c_~SIZE~0) 2)) aux_div_v_main_~i~0_8_49) (<= (+ .cse3 18446744073709551616) .cse4) (< .cse4 .cse3) (< (+ c_main_~i~0 (* 2 aux_div_v_main_~i~0_8_49)) c_~SIZE~0) (= (+ (* aux_div_v_main_~sum~0_9_42 (- 18446744073709551616)) (* 2 aux_div_v_main_~i~0_8_49 aux_div_v_main_~i~0_8_49) (* c_main_~i~0 2 aux_div_v_main_~i~0_8_49) aux_div_v_main_~i~0_8_49 c_main_~sum~0) (mod (div (* (+ c_~SIZE~0 1) c_~SIZE~0) 2) 18446744073709551616))))) (<= .cse2 .cse5))) (or (forall ((aux_div_v_main_~i~0_8_51 Int) (aux_div_v_main_~sum~0_9_42 Int)) (let ((.cse10 (* aux_div_v_main_~sum~0_9_42 18446744073709551616)) (.cse7 (* (* c_main_~i~0 aux_div_v_main_~i~0_8_51) 2)) (.cse8 (* (* aux_div_v_main_~i~0_8_51 aux_div_v_main_~i~0_8_51) 2)) (.cse9 (* 3 aux_div_v_main_~i~0_8_51)) (.cse11 (* (- 1) c_main_~i~0))) (or (< (+ c_main_~i~0 .cse7 .cse8 .cse9 1 c_main_~sum~0) .cse10) (<= aux_div_v_main_~i~0_8_51 (div (+ (- 2) .cse11 c_~SIZE~0) 2)) (<= (+ .cse10 18446744073709551615) (+ c_main_~i~0 .cse7 .cse8 .cse9 c_main_~sum~0)) (= (+ c_main_~i~0 (* aux_div_v_main_~sum~0_9_42 (- 18446744073709551616)) (* 2 aux_div_v_main_~i~0_8_51 aux_div_v_main_~i~0_8_51) .cse9 (* c_main_~i~0 2 aux_div_v_main_~i~0_8_51) 1 c_main_~sum~0) (mod (div (* (+ c_~SIZE~0 1) c_~SIZE~0) 2) 18446744073709551616)) (<= (+ (div (+ (- 1) .cse11 c_~SIZE~0) 2) 1) aux_div_v_main_~i~0_8_51)))) (<= .cse5 .cse6) (<= (+ .cse5 1) 0))))) is different from false [2022-03-20 04:21:24,455 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse4 (div (+ (- 2) c_~SIZE~0) 2)) (.cse1 (div (+ (- 1) c_~SIZE~0) 2))) (and (let ((.cse0 (+ 1 .cse4))) (or (<= .cse0 .cse1) (forall ((aux_div_v_main_~sum~0_9_42 Int) (aux_div_v_main_~i~0_8_49 Int)) (let ((.cse3 (* aux_div_v_main_~sum~0_9_42 18446744073709551616)) (.cse2 (+ (* (* aux_div_v_main_~i~0_8_49 aux_div_v_main_~i~0_8_49) 2) aux_div_v_main_~i~0_8_49))) (or (< .cse2 .cse3) (<= (+ .cse3 18446744073709551616) .cse2) (< (* 2 aux_div_v_main_~i~0_8_49) c_~SIZE~0) (= (+ (* aux_div_v_main_~sum~0_9_42 (- 18446744073709551616)) (* 2 aux_div_v_main_~i~0_8_49 aux_div_v_main_~i~0_8_49) aux_div_v_main_~i~0_8_49) (mod (div (* (+ c_~SIZE~0 1) c_~SIZE~0) 2) 18446744073709551616)) (<= (+ 2 (div (+ (- 2) c_~SIZE~0) 2)) aux_div_v_main_~i~0_8_49)))) (<= .cse0 0))) (or (<= 1 (div (+ (- 1) (mod (div (* (+ c_~SIZE~0 1) c_~SIZE~0) 2) 18446744073709551616)) (- 18446744073709551616))) (< 0 c_~SIZE~0)) (or (forall ((aux_div_v_main_~i~0_8_51 Int) (aux_div_v_main_~sum~0_9_42 Int)) (let ((.cse7 (* aux_div_v_main_~sum~0_9_42 18446744073709551616)) (.cse6 (* (* aux_div_v_main_~i~0_8_51 aux_div_v_main_~i~0_8_51) 2)) (.cse5 (* 3 aux_div_v_main_~i~0_8_51))) (or (= (mod (div (* (+ c_~SIZE~0 1) c_~SIZE~0) 2) 18446744073709551616) (+ (* aux_div_v_main_~sum~0_9_42 (- 18446744073709551616)) (* 2 aux_div_v_main_~i~0_8_51 aux_div_v_main_~i~0_8_51) .cse5 1)) (<= aux_div_v_main_~i~0_8_51 (div (+ (- 2) c_~SIZE~0) 2)) (< (+ .cse6 .cse5 1) .cse7) (<= (+ .cse7 18446744073709551615) (+ .cse6 .cse5)) (<= (+ 1 (div (+ (- 1) c_~SIZE~0) 2)) aux_div_v_main_~i~0_8_51)))) (<= .cse1 .cse4) (<= (+ 1 .cse1) 0)))) is different from true [2022-03-20 04:23:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-20 04:23:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:23:14,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952549653] [2022-03-20 04:23:14,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:23:14,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957674151] [2022-03-20 04:23:14,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957674151] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:23:14,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:23:14,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-03-20 04:23:14,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629036722] [2022-03-20 04:23:14,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:23:14,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 04:23:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:23:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 04:23:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=67, Unknown=2, NotChecked=34, Total=132 [2022-03-20 04:23:14,094 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 04:23:16,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:23:18,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:23:20,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:23:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:23:20,369 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-03-20 04:23:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 04:23:20,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2022-03-20 04:23:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:23:20,371 INFO L225 Difference]: With dead ends: 19 [2022-03-20 04:23:20,371 INFO L226 Difference]: Without dead ends: 15 [2022-03-20 04:23:20,371 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=48, Invalid=114, Unknown=2, NotChecked=46, Total=210 [2022-03-20 04:23:20,372 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-20 04:23:20,372 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 43 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 3 Unknown, 29 Unchecked, 6.2s Time] [2022-03-20 04:23:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-20 04:23:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-20 04:23:20,376 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) [2022-03-20 04:23:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-20 04:23:20,376 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2022-03-20 04:23:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:23:20,376 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-20 04:23:20,376 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 04:23:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-20 04:23:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 04:23:20,377 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:23:20,377 INFO L499 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:23:20,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 04:23:20,580 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-20 04:23:20,581 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:23:20,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:23:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -771029098, now seen corresponding path program 2 times [2022-03-20 04:23:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:23:20,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818863080] [2022-03-20 04:23:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:23:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:23:20,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:23:20,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522353684] [2022-03-20 04:23:20,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 04:23:20,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:23:20,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:23:20,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:23:20,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process