/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-6c470ae [2022-02-14 21:41:52,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 21:41:52,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 21:41:52,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 21:41:53,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 21:41:53,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 21:41:53,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 21:41:53,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 21:41:53,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 21:41:53,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 21:41:53,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 21:41:53,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 21:41:53,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 21:41:53,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 21:41:53,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 21:41:53,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 21:41:53,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 21:41:53,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 21:41:53,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 21:41:53,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 21:41:53,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 21:41:53,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 21:41:53,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 21:41:53,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 21:41:53,044 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 21:41:53,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 21:41:53,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 21:41:53,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 21:41:53,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 21:41:53,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 21:41:53,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 21:41:53,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 21:41:53,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 21:41:53,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 21:41:53,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 21:41:53,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 21:41:53,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 21:41:53,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 21:41:53,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 21:41:53,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 21:41:53,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 21:41:53,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 21:41:53,046 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 21:41:53,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 21:41:53,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 21:41:53,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 21:41:53,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 21:41:53,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 21:41:53,257 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 21:41:53,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2022-02-14 21:41:53,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd0a89d7/f549ba4119964ed7b6bb6e780bc9ae62/FLAGcfb540e7a [2022-02-14 21:41:53,612 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 21:41:53,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2022-02-14 21:41:53,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd0a89d7/f549ba4119964ed7b6bb6e780bc9ae62/FLAGcfb540e7a [2022-02-14 21:41:54,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd0a89d7/f549ba4119964ed7b6bb6e780bc9ae62 [2022-02-14 21:41:54,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 21:41:54,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 21:41:54,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 21:41:54,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 21:41:54,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 21:41:54,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f20050e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54, skipping insertion in model container [2022-02-14 21:41:54,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 21:41:54,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 21:41:54,202 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] [2022-02-14 21:41:54,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 21:41:54,227 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 21:41:54,234 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] [2022-02-14 21:41:54,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 21:41:54,243 INFO L208 MainTranslator]: Completed translation [2022-02-14 21:41:54,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54 WrapperNode [2022-02-14 21:41:54,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 21:41:54,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 21:41:54,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 21:41:54,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 21:41:54,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 21:41:54,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 21:41:54,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 21:41:54,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 21:41:54,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:54,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 21:41:54,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 21:41:54,306 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) [2022-02-14 21:41:54,314 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 [2022-02-14 21:41:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 21:41:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 21:41:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 21:41:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 21:41:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 21:41:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 21:41:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 21:41:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 21:41:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 21:41:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 21:41:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 21:41:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-14 21:41:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 21:41:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 21:41:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 21:41:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 21:41:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 21:41:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 21:41:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 21:41:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 21:41:54,422 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 21:41:54,423 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 21:41:54,501 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 21:41:54,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 21:41:54,505 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 21:41:54,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:41:54 BoogieIcfgContainer [2022-02-14 21:41:54,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 21:41:54,507 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 21:41:54,507 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 21:41:54,511 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 21:41:54,513 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:41:54" (1/1) ... [2022-02-14 21:41:56,002 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-14 21:41:56,002 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] [2022-02-14 21:41:56,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 09:41:56 BasicIcfg [2022-02-14 21:41:56,016 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 21:41:56,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 21:41:56,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 21:41:56,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 21:41:56,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 09:41:54" (1/4) ... [2022-02-14 21:41:56,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259d4186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:41:56, skipping insertion in model container [2022-02-14 21:41:56,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:41:54" (2/4) ... [2022-02-14 21:41:56,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259d4186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:41:56, skipping insertion in model container [2022-02-14 21:41:56,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:41:54" (3/4) ... [2022-02-14 21:41:56,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259d4186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 09:41:56, skipping insertion in model container [2022-02-14 21:41:56,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 09:41:56" (4/4) ... [2022-02-14 21:41:56,022 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.iJordan [2022-02-14 21:41:56,025 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 21:41:56,025 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 21:41:56,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 21:41:56,057 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 [2022-02-14 21:41:56,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 21:41:56,065 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) [2022-02-14 21:41:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 21:41:56,084 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:41:56,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:41:56,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:41:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:41:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-02-14 21:41:56,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:41:56,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552997636] [2022-02-14 21:41:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:41:56,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:41:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:41:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 21:41:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:41:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 21:41:56,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 21:41:56,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552997636] [2022-02-14 21:41:56,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552997636] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 21:41:56,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 21:41:56,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 21:41:56,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052994437] [2022-02-14 21:41:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 21:41:56,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 21:41:56,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 21:41:56,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 21:41:56,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 21:41:56,318 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) [2022-02-14 21:41:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 21:41:56,339 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-02-14 21:41:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 21:41:56,341 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 [2022-02-14 21:41:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 21:41:56,345 INFO L225 Difference]: With dead ends: 20 [2022-02-14 21:41:56,345 INFO L226 Difference]: Without dead ends: 13 [2022-02-14 21:41:56,347 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 [2022-02-14 21:41:56,349 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 [2022-02-14 21:41:56,350 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] [2022-02-14 21:41:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-14 21:41:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-14 21:41:56,368 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) [2022-02-14 21:41:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-14 21:41:56,369 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-02-14 21:41:56,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 21:41:56,370 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-14 21:41:56,370 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) [2022-02-14 21:41:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-14 21:41:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 21:41:56,370 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:41:56,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:41:56,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 21:41:56,371 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:41:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:41:56,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-02-14 21:41:56,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:41:56,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287725422] [2022-02-14 21:41:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:41:56,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:41:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:41:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 21:41:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:41:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 21:41:56,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 21:41:56,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287725422] [2022-02-14 21:41:56,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287725422] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 21:41:56,432 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 21:41:56,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 21:41:56,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369231414] [2022-02-14 21:41:56,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 21:41:56,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 21:41:56,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 21:41:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 21:41:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-14 21:41:56,434 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) [2022-02-14 21:41:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 21:41:56,483 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-02-14 21:41:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 21:41:56,483 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 [2022-02-14 21:41:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 21:41:56,484 INFO L225 Difference]: With dead ends: 17 [2022-02-14 21:41:56,484 INFO L226 Difference]: Without dead ends: 14 [2022-02-14 21:41:56,484 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 [2022-02-14 21:41:56,485 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 [2022-02-14 21:41:56,485 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] [2022-02-14 21:41:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-14 21:41:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-14 21:41:56,487 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) [2022-02-14 21:41:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-14 21:41:56,488 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-14 21:41:56,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 21:41:56,488 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-14 21:41:56,488 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) [2022-02-14 21:41:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-14 21:41:56,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-14 21:41:56,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:41:56,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:41:56,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-14 21:41:56,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:41:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:41:56,490 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-02-14 21:41:56,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:41:56,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221965510] [2022-02-14 21:41:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:41:56,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:41:56,512 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 21:41:56,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704940309] [2022-02-14 21:41:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:41:56,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 21:41:56,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 21:41:56,531 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) [2022-02-14 21:41:56,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 21:41:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:41:56,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-14 21:41:56,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 21:41:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 21:41:56,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 21:42:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 21:42:01,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 21:42:01,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221965510] [2022-02-14 21:42:01,219 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 21:42:01,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704940309] [2022-02-14 21:42:01,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704940309] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 21:42:01,219 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 21:42:01,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-02-14 21:42:01,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087239673] [2022-02-14 21:42:01,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 21:42:01,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 21:42:01,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 21:42:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 21:42:01,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-14 21:42:01,221 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) [2022-02-14 21:42:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 21:42:01,241 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-02-14 21:42:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 21:42:01,242 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 [2022-02-14 21:42:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 21:42:01,242 INFO L225 Difference]: With dead ends: 18 [2022-02-14 21:42:01,242 INFO L226 Difference]: Without dead ends: 15 [2022-02-14 21:42:01,242 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 [2022-02-14 21:42:01,243 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 [2022-02-14 21:42:01,244 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] [2022-02-14 21:42:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-14 21:42:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-14 21:42:01,245 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) [2022-02-14 21:42:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-02-14 21:42:01,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-02-14 21:42:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 21:42:01,246 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-02-14 21:42:01,246 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) [2022-02-14 21:42:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-02-14 21:42:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-14 21:42:01,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:42:01,247 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:42:01,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-14 21:42:01,463 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 [2022-02-14 21:42:01,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:42:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:42:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 938486524, now seen corresponding path program 2 times [2022-02-14 21:42:01,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:42:01,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594181486] [2022-02-14 21:42:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:42:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:42:01,471 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 21:42:01,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804256163] [2022-02-14 21:42:01,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 21:42:01,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 21:42:01,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 21:42:01,476 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) [2022-02-14 21:42:01,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 21:42:01,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 21:42:01,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 21:42:01,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-14 21:42:01,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 21:42:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 21:42:02,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 21:42:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 21:42:13,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 21:42:13,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594181486] [2022-02-14 21:42:13,060 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 21:42:13,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804256163] [2022-02-14 21:42:13,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804256163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 21:42:13,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 21:42:13,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-02-14 21:42:13,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367537085] [2022-02-14 21:42:13,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 21:42:13,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 21:42:13,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 21:42:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 21:42:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2022-02-14 21:42:13,062 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) [2022-02-14 21:42:15,104 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 [] [2022-02-14 21:42:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 21:42:17,492 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-02-14 21:42:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 21:42:17,493 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 [2022-02-14 21:42:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 21:42:17,493 INFO L225 Difference]: With dead ends: 20 [2022-02-14 21:42:17,493 INFO L226 Difference]: Without dead ends: 17 [2022-02-14 21:42:17,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2022-02-14 21:42:17,494 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-14 21:42:17,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 1 Unknown, 7 Unchecked, 2.0s Time] [2022-02-14 21:42:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-14 21:42:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-14 21:42:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-02-14 21:42:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-02-14 21:42:17,497 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2022-02-14 21:42:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 21:42:17,498 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-02-14 21:42:17,498 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) [2022-02-14 21:42:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-02-14 21:42:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-14 21:42:17,498 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:42:17,498 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:42:17,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 21:42:17,699 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 [2022-02-14 21:42:17,699 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:42:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:42:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash 797507612, now seen corresponding path program 3 times [2022-02-14 21:42:17,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:42:17,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178155597] [2022-02-14 21:42:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:42:17,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:42:17,706 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 21:42:17,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637079713] [2022-02-14 21:42:17,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-14 21:42:17,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 21:42:17,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 21:42:17,709 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) [2022-02-14 21:42:17,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 21:42:18,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-14 21:42:18,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 21:42:18,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-14 21:42:18,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 21:42:24,385 WARN L860 $PredicateComparison]: unable to prove that (or (and (let ((.cse1 (* (- 1) c_main_~i~0))) (or (let ((.cse0 (div .cse1 (- 2)))) (and (< 0 .cse0) (< .cse0 (+ (div (+ (- 2) c_main_~n~0) 2) 2)) (<= (* 2 (* .cse0 .cse0)) (+ .cse0 c_main_~sum~0)))) (and (= c_main_~i~0 0) (<= 0 c_main_~sum~0)) (let ((.cse2 (div (+ .cse1 1) (- 2)))) (and (<= (+ .cse2 (* 2 (* .cse2 .cse2))) c_main_~sum~0) (< .cse2 (+ (div (+ (- 1) c_main_~n~0) 2) 1)) (<= 0 .cse2))))) (not (< c_main_~i~0 c_main_~n~0))) (exists ((aux_div_v_main_~i~0_14_36 Int)) (let ((.cse3 (* (- 2) aux_div_v_main_~i~0_14_36))) (and (< aux_div_v_main_~i~0_14_36 c_main_~i~0) (< c_main_~i~0 (+ 2 (div (+ c_main_~i~0 (- 2) c_main_~n~0 .cse3) 2) aux_div_v_main_~i~0_14_36)) (let ((.cse5 (* (* c_main_~i~0 aux_div_v_main_~i~0_14_36) 2)) (.cse6 (* 2 (* aux_div_v_main_~i~0_14_36 aux_div_v_main_~i~0_14_36)))) (or (let ((.cse4 (div (+ c_main_~i~0 .cse3 1) (- 2)))) (and (<= 0 .cse4) (<= (+ .cse5 (* 2 (* .cse4 .cse4)) .cse4 aux_div_v_main_~i~0_14_36) (+ .cse6 c_main_~i~0 c_main_~sum~0)) (= (mod (+ c_main_~i~0 1) 2) 0))) (let ((.cse7 (div (+ c_main_~i~0 .cse3) (- 2)))) (and (<= (+ .cse5 (* 2 (* .cse7 .cse7)) aux_div_v_main_~i~0_14_36) (+ .cse6 c_main_~i~0 .cse7 c_main_~sum~0)) (< 0 .cse7)))))))) (exists ((aux_div_v_main_~i~0_14_38 Int)) (let ((.cse8 (* (- 2) aux_div_v_main_~i~0_14_38))) (and (< c_main_~i~0 (+ (div (+ c_main_~i~0 .cse8 c_main_~n~0) 2) 1 aux_div_v_main_~i~0_14_38)) (<= aux_div_v_main_~i~0_14_38 c_main_~i~0) (let ((.cse9 (* 3 aux_div_v_main_~i~0_14_38)) (.cse10 (* 2 (* c_main_~i~0 aux_div_v_main_~i~0_14_38))) (.cse12 (* c_main_~i~0 2)) (.cse13 (* (* aux_div_v_main_~i~0_14_38 aux_div_v_main_~i~0_14_38) 2))) (or (let ((.cse11 (div (+ c_main_~i~0 .cse8 1) (- 2)))) (and (<= (+ .cse9 .cse10 (* (* .cse11 .cse11) 2)) (+ .cse11 .cse12 .cse13 1 c_main_~sum~0)) (< 0 .cse11))) (let ((.cse14 (div (+ c_main_~i~0 2 .cse8) (- 2)))) (and (<= 0 .cse14) (= (mod c_main_~i~0 2) 0) (<= (+ .cse9 .cse10 (* (* .cse14 .cse14) 2) .cse14) (+ .cse12 .cse13 1 c_main_~sum~0)))))))))) is different from true [2022-02-14 21:43:00,594 WARN L860 $PredicateComparison]: unable to prove that (or (and (let ((.cse1 (* (- 1) c_main_~i~0))) (or (let ((.cse0 (div .cse1 (- 2)))) (and (< 0 .cse0) (< .cse0 (+ (div (+ (- 2) c_main_~n~0) 2) 2)) (<= (* 2 (* .cse0 .cse0)) (+ .cse0 c_main_~sum~0)))) (and (= c_main_~i~0 0) (<= 0 c_main_~sum~0)) (let ((.cse2 (div (+ .cse1 1) (- 2)))) (and (<= (+ .cse2 (* 2 (* .cse2 .cse2))) c_main_~sum~0) (< .cse2 (+ (div (+ (- 1) c_main_~n~0) 2) 1)) (<= 0 .cse2))))) (not (< c_main_~i~0 c_main_~n~0))) (exists ((aux_div_v_main_~i~0_15_38 Int)) (and (< c_main_~i~0 (+ 1 (div (+ c_main_~i~0 (* (- 2) aux_div_v_main_~i~0_15_38) c_main_~n~0) 2) aux_div_v_main_~i~0_15_38)) (<= aux_div_v_main_~i~0_15_38 c_main_~i~0) (or (exists ((aux_div_v_main_~i~0_14_38 Int)) (let ((.cse3 (* 2 aux_div_v_main_~i~0_15_38))) (and (<= (+ c_main_~i~0 1 aux_div_v_main_~i~0_14_38) .cse3) (let ((.cse4 (* 4 (* aux_div_v_main_~i~0_14_38 aux_div_v_main_~i~0_15_38))) (.cse6 (* (* c_main_~i~0 aux_div_v_main_~i~0_15_38) 2)) (.cse7 (* 2 (* c_main_~i~0 aux_div_v_main_~i~0_14_38))) (.cse8 (* (* aux_div_v_main_~i~0_14_38 aux_div_v_main_~i~0_14_38) 2)) (.cse9 (* (* aux_div_v_main_~i~0_15_38 aux_div_v_main_~i~0_15_38) 2)) (.cse10 (* (- 1) c_main_~i~0)) (.cse11 (* (- 2) aux_div_v_main_~i~0_14_38))) (or (let ((.cse5 (div (+ .cse10 .cse11 .cse3 1) (- 2)))) (and (<= (+ .cse4 (* 2 (* .cse5 .cse5)) .cse5 .cse6 aux_div_v_main_~i~0_14_38) (+ .cse7 .cse8 .cse9 c_main_~sum~0 aux_div_v_main_~i~0_15_38)) (<= 0 .cse5) (= (mod (+ c_main_~i~0 1) 2) 0))) (let ((.cse12 (div (+ .cse10 .cse11 .cse3) (- 2)))) (and (< 0 .cse12) (<= (+ .cse4 (* (* .cse12 .cse12) 2) .cse6 aux_div_v_main_~i~0_14_38) (+ .cse7 .cse12 .cse8 .cse9 c_main_~sum~0 aux_div_v_main_~i~0_15_38))))))))) (exists ((aux_div_v_main_~i~0_14_36 Int)) (let ((.cse20 (* 2 aux_div_v_main_~i~0_15_38))) (and (let ((.cse14 (* (* aux_div_v_main_~i~0_14_36 aux_div_v_main_~i~0_15_38) 4)) (.cse15 (* (* c_main_~i~0 aux_div_v_main_~i~0_15_38) 2)) (.cse16 (* (* c_main_~i~0 aux_div_v_main_~i~0_14_36) 2)) (.cse17 (* 2 (* aux_div_v_main_~i~0_14_36 aux_div_v_main_~i~0_14_36))) (.cse18 (* (* aux_div_v_main_~i~0_15_38 aux_div_v_main_~i~0_15_38) 2)) (.cse19 (* (- 1) c_main_~i~0)) (.cse21 (* (- 2) aux_div_v_main_~i~0_14_36))) (or (let ((.cse13 (div (+ .cse19 .cse20 .cse21) (- 2)))) (and (<= 0 .cse13) (= (mod c_main_~i~0 2) 0) (<= (+ (* 2 (* .cse13 .cse13)) .cse13 .cse14 .cse15 aux_div_v_main_~i~0_15_38) (+ .cse16 .cse17 c_main_~i~0 .cse18 c_main_~sum~0 aux_div_v_main_~i~0_14_36)))) (let ((.cse22 (div (+ (- 1) .cse19 .cse20 .cse21) (- 2)))) (and (<= (+ (* 2 (* .cse22 .cse22)) .cse14 .cse15 aux_div_v_main_~i~0_15_38) (+ .cse16 .cse17 c_main_~i~0 .cse18 .cse22 c_main_~sum~0 aux_div_v_main_~i~0_14_36)) (< 0 .cse22))))) (< (+ c_main_~i~0 1 aux_div_v_main_~i~0_14_36) .cse20))))))) (exists ((aux_div_v_main_~i~0_15_36 Int)) (and (< aux_div_v_main_~i~0_15_36 c_main_~i~0) (< c_main_~i~0 (+ (div (+ (* (- 2) aux_div_v_main_~i~0_15_36) c_main_~i~0 (- 2) c_main_~n~0) 2) 2 aux_div_v_main_~i~0_15_36)) (or (exists ((aux_div_v_main_~i~0_14_36 Int)) (let ((.cse23 (* 2 aux_div_v_main_~i~0_15_36))) (and (< (+ c_main_~i~0 aux_div_v_main_~i~0_14_36) .cse23) (let ((.cse25 (* (* c_main_~i~0 aux_div_v_main_~i~0_15_36) 2)) (.cse26 (* (* aux_div_v_main_~i~0_14_36 aux_div_v_main_~i~0_15_36) 4)) (.cse27 (* (* c_main_~i~0 aux_div_v_main_~i~0_14_36) 2)) (.cse28 (* 2 (* aux_div_v_main_~i~0_14_36 aux_div_v_main_~i~0_14_36))) (.cse29 (* 2 (* aux_div_v_main_~i~0_15_36 aux_div_v_main_~i~0_15_36))) (.cse30 (* (- 1) c_main_~i~0)) (.cse31 (* (- 2) aux_div_v_main_~i~0_14_36))) (or (let ((.cse24 (div (+ .cse30 .cse31 .cse23) (- 2)))) (and (<= (+ (* (* .cse24 .cse24) 2) .cse25 .cse26 aux_div_v_main_~i~0_14_36) (+ .cse27 .cse28 .cse24 .cse29 c_main_~sum~0 aux_div_v_main_~i~0_15_36)) (< 0 .cse24))) (let ((.cse32 (div (+ .cse30 .cse31 .cse23 1) (- 2)))) (and (<= (+ (* 2 (* .cse32 .cse32)) .cse25 .cse32 .cse26 aux_div_v_main_~i~0_14_36) (+ .cse27 .cse28 .cse29 c_main_~sum~0 aux_div_v_main_~i~0_15_36)) (= (mod (+ c_main_~i~0 1) 2) 0) (<= 0 .cse32)))))))) (exists ((aux_div_v_main_~i~0_14_38 Int)) (let ((.cse33 (* 2 aux_div_v_main_~i~0_15_36))) (and (<= (+ c_main_~i~0 aux_div_v_main_~i~0_14_38) .cse33) (let ((.cse34 (* 3 aux_div_v_main_~i~0_14_38)) (.cse35 (* (* c_main_~i~0 aux_div_v_main_~i~0_15_36) 2)) (.cse36 (* (* aux_div_v_main_~i~0_14_38 aux_div_v_main_~i~0_15_36) 4)) (.cse38 (* 2 (* c_main_~i~0 aux_div_v_main_~i~0_14_38))) (.cse39 (* 2 (* aux_div_v_main_~i~0_15_36 aux_div_v_main_~i~0_15_36))) (.cse40 (* (* aux_div_v_main_~i~0_14_38 aux_div_v_main_~i~0_14_38) 2)) (.cse41 (* 3 aux_div_v_main_~i~0_15_36)) (.cse42 (* (- 1) c_main_~i~0)) (.cse43 (* (- 2) aux_div_v_main_~i~0_14_38))) (or (let ((.cse37 (div (+ .cse42 .cse43 .cse33 1) (- 2)))) (and (<= (+ .cse34 c_main_~i~0 .cse35 .cse36 (* 2 (* .cse37 .cse37))) (+ .cse37 .cse38 .cse39 .cse40 .cse41 1 c_main_~sum~0)) (< 0 .cse37))) (let ((.cse44 (div (+ .cse42 2 .cse43 .cse33) (- 2)))) (and (<= 0 .cse44) (= (mod c_main_~i~0 2) 0) (<= (+ .cse34 c_main_~i~0 .cse35 .cse44 .cse36 (* 2 (* .cse44 .cse44))) (+ .cse38 .cse39 .cse40 .cse41 1 c_main_~sum~0))))))))))))) is different from true [2022-02-14 21:55:47,763 WARN L228 SmtUtils]: Spent 1.05m on a formula simplification that was a NOOP. DAG size: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-14 21:56:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 7 not checked. [2022-02-14 21:56:08,563 INFO L328 TraceCheckSpWp]: Computing backward predicates...