/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 0.2.1-dev-c225d54 [2021-05-02 18:54:00,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:54:00,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:54:00,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:54:00,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:54:00,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:54:00,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:54:00,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:54:00,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:54:00,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:54:00,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:54:00,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:54:00,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:54:00,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:54:00,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:54:00,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:54:00,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:54:00,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:54:00,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:54:00,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:54:00,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:54:00,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:54:00,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:54:00,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:54:00,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:54:00,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:54:00,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:54:00,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:54:00,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:54:00,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:54:00,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:54:00,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:54:00,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:54:00,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:54:00,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:54:00,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:54:00,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:54:00,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:54:00,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:54:00,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:54:00,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:54:00,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:54:00,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:54:00,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:54:00,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:54:00,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:54:00,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:54:00,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:54:00,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:54:00,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:54:00,444 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:54:00,444 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:54:00,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:54:00,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:54:00,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:54:00,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:54:00,757 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:54:00,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sum_natnum.c [2021-05-02 18:54:00,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f391cc7f/261fd1bb67bf4b88bed072a8cc990eb3/FLAG14040b808 [2021-05-02 18:54:01,186 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:54:01,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sum_natnum.c [2021-05-02 18:54:01,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f391cc7f/261fd1bb67bf4b88bed072a8cc990eb3/FLAG14040b808 [2021-05-02 18:54:01,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f391cc7f/261fd1bb67bf4b88bed072a8cc990eb3 [2021-05-02 18:54:01,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:54:01,212 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:54:01,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:54:01,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:54:01,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:54:01,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27fe5c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01, skipping insertion in model container [2021-05-02 18:54:01,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:54:01,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:54:01,348 WARN L224 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] [2021-05-02 18:54:01,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:54:01,367 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:54:01,386 WARN L224 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] [2021-05-02 18:54:01,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:54:01,420 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:54:01,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01 WrapperNode [2021-05-02 18:54:01,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:54:01,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:54:01,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:54:01,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:54:01,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:54:01,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:54:01,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:54:01,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:54:01,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:54:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:54:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:54:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:54:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:54:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:54:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:54:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:54:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:54:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:54:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:54:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:54:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:54:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:54:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:54:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:54:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:54:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:54:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:54:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:54:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:54:01,712 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:54:01,712 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:54:01,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:54:01 BoogieIcfgContainer [2021-05-02 18:54:01,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:54:01,714 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:54:01,714 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:54:01,715 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:54:01,716 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:54:01" (1/1) ... [2021-05-02 18:54:01,750 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_3 v_~SIZE~0_2) InVars {~SIZE~0=v_~SIZE~0_2, main_~i~0=v_main_~i~0_3} OutVars{~SIZE~0=v_~SIZE~0_2, main_~i~0=v_main_~i~0_3} AuxVars[] AssignedVars[] [2021-05-02 18:54:01,804 WARN L240 tifierPushTermWalker]: treesize reduction 13, result has 92.5 percent of original size [2021-05-02 18:54:05,899 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 18:54:06,005 WARN L245 tifierPushTermWalker]: treesize reduction 13, result has 92.5 percent of original size 160 [2021-05-02 18:54:06,043 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= v_main_~i~0_2 (+ v_main_~i~0_3 1)) (= v_main_~sum~0_1 (+ v_main_~sum~0_2 v_main_~i~0_2)) (< v_main_~i~0_3 v_~SIZE~0_2)) 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] with Formula: (let ((.cse3 (* v_main_~i~0_3 (- 1))) (.cse0 (* 2 (* v_itFinHalf_1 v_itFinHalf_1))) (.cse1 (* 2 (* v_itFinHalf_1 v_main_~i~0_3))) (.cse4 (< v_main_~i~0_3 v_~SIZE~0_2)) (.cse5 (* 2 v_itFinHalf_1))) (or (and (= v_main_~sum~0_2 v_main_~sum~0_1) (<= v_~SIZE~0_2 v_main_~i~0_3) (= v_main_~i~0_3 v_main_~i~0_2) (= v_itFinHalf_1 0)) (let ((.cse2 (+ .cse5 v_main_~i~0_3 1))) (and (= (+ .cse0 .cse1 (* 3 v_itFinHalf_1) v_main_~sum~0_2 v_main_~i~0_3 1) v_main_~sum~0_1) (= v_main_~i~0_2 .cse2) (< v_itFinHalf_1 (+ (div (+ v_~SIZE~0_2 .cse3 (- 1)) 2) 1)) (<= v_~SIZE~0_2 .cse2) .cse4)) (let ((.cse6 (+ .cse5 v_main_~i~0_3))) (and (< v_itFinHalf_1 (+ (div (+ v_~SIZE~0_2 .cse3 (- 2)) 2) 2)) (= (+ .cse0 .cse1 v_itFinHalf_1 v_main_~sum~0_2) v_main_~sum~0_1) .cse4 (<= v_~SIZE~0_2 .cse6) (= v_main_~i~0_2 .cse6))))) 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[v_itFinHalf_1] AssignedVars[main_~sum~0, main_~i~0] [2021-05-02 18:54:06,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:54:06 BasicIcfg [2021-05-02 18:54:06,049 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:54:06,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:54:06,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:54:06,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:54:06,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:54:01" (1/4) ... [2021-05-02 18:54:06,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5898d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:54:06, skipping insertion in model container [2021-05-02 18:54:06,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:54:01" (2/4) ... [2021-05-02 18:54:06,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5898d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:54:06, skipping insertion in model container [2021-05-02 18:54:06,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:54:01" (3/4) ... [2021-05-02 18:54:06,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5898d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:54:06, skipping insertion in model container [2021-05-02 18:54:06,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:54:06" (4/4) ... [2021-05-02 18:54:06,054 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_natnum.cJordan [2021-05-02 18:54:06,058 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:54:06,059 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:54:06,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:54:06,084 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:54:06,084 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:54:06,085 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:54:06,085 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:54:06,085 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:54:06,085 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:54:06,085 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:54:06,085 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:54:06,094 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) [2021-05-02 18:54:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:54:06,098 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:06,099 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:06,099 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1627068025, now seen corresponding path program 1 times [2021-05-02 18:54:06,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:06,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566837999] [2021-05-02 18:54:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:06,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:54:06,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:06,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566837999] [2021-05-02 18:54:06,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566837999] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:54:06,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:54:06,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:54:06,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947407179] [2021-05-02 18:54:06,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:54:06,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:06,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:54:06,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:54:06,241 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) [2021-05-02 18:54:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:08,304 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-02 18:54:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:54:08,306 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 [2021-05-02 18:54:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:08,312 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:54:08,313 INFO L226 Difference]: Without dead ends: 12 [2021-05-02 18:54:08,313 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:54:08,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-02 18:54:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-02 18:54:08,332 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) [2021-05-02 18:54:08,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-02 18:54:08,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-02 18:54:08,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:08,334 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-02 18:54:08,334 INFO L481 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) [2021-05-02 18:54:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-02 18:54:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:54:08,335 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:08,335 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:08,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:54:08,336 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:08,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1626144504, now seen corresponding path program 1 times [2021-05-02 18:54:08,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:08,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097075320] [2021-05-02 18:54:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:08,363 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:54:08,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935621328] [2021-05-02 18:54:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:08,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:54:08,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:08,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:54:08,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:08,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097075320] [2021-05-02 18:54:08,547 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 18:54:08,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935621328] [2021-05-02 18:54:08,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935621328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:54:08,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:54:08,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:54:08,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638304489] [2021-05-02 18:54:08,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:54:08,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:08,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:54:08,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:54:08,549 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) [2021-05-02 18:54:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:10,573 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-05-02 18:54:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:54:10,587 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 [2021-05-02 18:54:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:10,587 INFO L225 Difference]: With dead ends: 13 [2021-05-02 18:54:10,587 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 18:54:10,588 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:54:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 18:54:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 18:54:10,590 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) [2021-05-02 18:54:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 18:54:10,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 18:54:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:10,590 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 18:54:10,590 INFO L481 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) [2021-05-02 18:54:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 18:54:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:54:10,591 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:10,591 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:10,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 18:54:10,801 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1155848534, now seen corresponding path program 1 times [2021-05-02 18:54:10,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:10,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412777266] [2021-05-02 18:54:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:10,811 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:54:10,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628818920] [2021-05-02 18:54:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:10,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:54:10,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:11,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:54:11,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:11,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412777266] [2021-05-02 18:54:11,535 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 18:54:11,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628818920] [2021-05-02 18:54:11,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628818920] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:11,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 18:54:11,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 18:54:11,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386503246] [2021-05-02 18:54:11,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:54:11,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:11,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:54:11,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:54:11,536 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 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) [2021-05-02 18:54:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:11,709 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-05-02 18:54:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:54:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 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) Word has length 12 [2021-05-02 18:54:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:11,710 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:54:11,710 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:54:11,710 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:54:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:54:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:54:11,712 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) [2021-05-02 18:54:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 18:54:11,712 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-02 18:54:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:11,712 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 18:54:11,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 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) [2021-05-02 18:54:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 18:54:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:54:11,713 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:11,713 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:11,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:11,921 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:11,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1498286792, now seen corresponding path program 2 times [2021-05-02 18:54:11,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:11,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858206734] [2021-05-02 18:54:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:11,938 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:54:11,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720691938] [2021-05-02 18:54:11,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:12,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:54:12,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:12,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:54:12,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:12,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:54:12,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:12,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858206734] [2021-05-02 18:54:12,198 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 18:54:12,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720691938] [2021-05-02 18:54:12,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720691938] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:12,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 18:54:12,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 18:54:12,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914182598] [2021-05-02 18:54:12,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:54:12,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:12,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:54:12,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:54:12,199 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2021-05-02 18:54:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:12,253 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-05-02 18:54:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:54:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) Word has length 13 [2021-05-02 18:54:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:12,253 INFO L225 Difference]: With dead ends: 12 [2021-05-02 18:54:12,253 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:54:12,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:54:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:54:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:54:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 18:54:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:54:12,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-02 18:54:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:12,254 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:54:12,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2021-05-02 18:54:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:54:12,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:54:12,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:12,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:54:12 BasicIcfg [2021-05-02 18:54:12,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:54:12,462 INFO L168 Benchmark]: Toolchain (without parser) took 11250.32 ms. Allocated memory was 216.0 MB in the beginning and 287.3 MB in the end (delta: 71.3 MB). Free memory was 181.0 MB in the beginning and 186.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 67.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:54:12,462 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 216.0 MB. Free memory is still 197.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:54:12,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.63 ms. Allocated memory is still 216.0 MB. Free memory was 180.8 MB in the beginning and 199.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:54:12,462 INFO L168 Benchmark]: Boogie Preprocessor took 31.72 ms. Allocated memory is still 216.0 MB. Free memory was 199.1 MB in the beginning and 197.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:54:12,462 INFO L168 Benchmark]: RCFGBuilder took 258.39 ms. Allocated memory is still 216.0 MB. Free memory was 197.6 MB in the beginning and 183.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:54:12,463 INFO L168 Benchmark]: IcfgTransformer took 4335.28 ms. Allocated memory is still 216.0 MB. Free memory was 183.9 MB in the beginning and 158.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-05-02 18:54:12,463 INFO L168 Benchmark]: TraceAbstraction took 6411.03 ms. Allocated memory was 216.0 MB in the beginning and 287.3 MB in the end (delta: 71.3 MB). Free memory was 158.2 MB in the beginning and 186.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:54:12,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 216.0 MB. Free memory is still 197.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 207.63 ms. Allocated memory is still 216.0 MB. Free memory was 180.8 MB in the beginning and 199.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.72 ms. Allocated memory is still 216.0 MB. Free memory was 199.1 MB in the beginning and 197.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 258.39 ms. Allocated memory is still 216.0 MB. Free memory was 197.6 MB in the beginning and 183.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 4335.28 ms. Allocated memory is still 216.0 MB. Free memory was 183.9 MB in the beginning and 158.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6411.03 ms. Allocated memory was 216.0 MB in the beginning and 287.3 MB in the end (delta: 71.3 MB). Free memory was 158.2 MB in the beginning and 186.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6376.4ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 8.6ms, AutomataDifference: 4351.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 31 SDslu, 50 SDs, 0 SdLazy, 66 SolverSat, 10 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4198.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 272.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.6ms SsaConstructionTime, 173.8ms SatisfiabilityAnalysisTime, 892.6ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 3 QuantifiedInterpolants, 356 SizeOfPredicates, 8 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...