/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-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:52:45,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:52:45,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:52:45,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 20:52:45,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:52:45,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:52:45,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:52:45,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:52:45,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:52:45,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:52:45,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:52:45,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:52:45,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:52:45,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:52:45,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:52:45,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:52:45,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 20:52:45,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:52:45,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:52:45,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:52:45,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:52:45,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:52:45,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:52:45,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:52:45,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:52:45,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:52:45,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:52:45,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:52:45,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:52:45,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:52:45,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:52:45,881 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:52:45,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:52:45,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:52:45,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:52:45,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:52:45,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:52:45,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:52:45,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:52:45,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:52:45,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:52:45,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:52:45,883 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:52:45,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:52:46,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:52:46,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:52:46,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:52:46,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:52:46,074 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:52:46,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2022-02-14 20:52:46,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f724c336a/319d32abd9b94b039789dffa1caa0451/FLAG3d755208d [2022-02-14 20:52:46,453 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:52:46,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2022-02-14 20:52:46,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f724c336a/319d32abd9b94b039789dffa1caa0451/FLAG3d755208d [2022-02-14 20:52:46,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f724c336a/319d32abd9b94b039789dffa1caa0451 [2022-02-14 20:52:46,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:52:46,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:52:46,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:52:46,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:52:46,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:52:46,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4d54c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46, skipping insertion in model container [2022-02-14 20:52:46,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:52:46,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:52:46,609 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-lit/gsv2008.i[895,908] [2022-02-14 20:52:46,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:52:46,622 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:52:46,630 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-lit/gsv2008.i[895,908] [2022-02-14 20:52:46,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:52:46,640 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:52:46,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46 WrapperNode [2022-02-14 20:52:46,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:52:46,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:52:46,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:52:46,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:52:46,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:52:46,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:52:46,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:52:46,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:52:46,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:46,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:52:46,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:52:46,681 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 20:52:46,695 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 20:52:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:52:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:52:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:52:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 20:52:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 20:52:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:52:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 20:52:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:52:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:52:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:52:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:52:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:52:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:52:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:52:46,754 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:52:46,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:52:46,830 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:52:46,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:52:46,834 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 20:52:46,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:52:46 BoogieIcfgContainer [2022-02-14 20:52:46,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:52:46,836 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:52:46,836 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:52:46,840 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:52:46,849 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:52:46" (1/1) ... [2022-02-14 20:52:53,603 WARN L228 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 78 DAG size of output: 72 (called from [L 564] de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.buildAccelerationFormula) [2022-02-14 20:52:53,615 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-14 20:52:53,616 INFO L91 elerationTransformer]: Accelerated Formula: (and (< v_main_~x~0_3 0) (= (+ v_main_~x~0_3 v_main_~y~0_5) v_main_~x~0_2) (= v_main_~y~0_4 (+ v_main_~y~0_5 1))) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_5} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_4, main_#t~post2=|v_main_#t~post2_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post2] to Formula: (let ((.cse0 (< v_main_~x~0_3 0)) (.cse2 (* (- 1) v_main_~y~0_4))) (or (let ((.cse1 (div (+ v_main_~y~0_5 .cse2) (- 2)))) (and (forall ((v_itHalf_1 Int)) (or (< (+ v_main_~x~0_3 v_main_~y~0_5 v_itHalf_1 (* 2 (* v_itHalf_1 v_itHalf_1)) (* 2 (* v_main_~y~0_5 v_itHalf_1))) 0) (not (<= 0 v_itHalf_1)) (not (<= (+ v_itHalf_1 1) (div (+ v_main_~y~0_5 (* (- 1) v_main_~y~0_4)) (- 2)))))) .cse0 (= (mod (+ v_main_~y~0_4 v_main_~y~0_5) 2) 0) (= (+ v_main_~x~0_3 (* (* v_main_~y~0_5 .cse1) 2) (* (* .cse1 .cse1) 2)) (+ v_main_~x~0_2 .cse1)) (< 0 .cse1))) (let ((.cse3 (div (+ v_main_~y~0_5 .cse2 1) (- 2)))) (and (<= 0 .cse3) (forall ((v_itHalf_1 Int)) (or (< (+ v_main_~x~0_3 (* 2 (* v_itHalf_1 v_itHalf_1)) (* 2 (* v_main_~y~0_5 v_itHalf_1))) v_itHalf_1) (not (<= 1 v_itHalf_1)) (not (<= v_itHalf_1 (div (+ v_main_~y~0_5 (* (- 1) v_main_~y~0_4) 1) (- 2)))))) .cse0 (= (+ v_main_~x~0_3 v_main_~y~0_5 (* (* v_main_~y~0_5 .cse3) 2) .cse3 (* (* .cse3 .cse3) 2)) v_main_~x~0_2) (= (mod (+ v_main_~y~0_4 v_main_~y~0_5 1) 2) 0))) (and (= v_main_~y~0_4 v_main_~y~0_5) (<= 0 v_main_~x~0_3) (= |v_main_#t~post2_3| |v_main_#t~post2_1|) (= v_main_~x~0_3 v_main_~x~0_2)))) InVars {main_~y~0=v_main_~y~0_5, main_#t~post2=|v_main_#t~post2_3|, main_~x~0=v_main_~x~0_3} OutVars{main_~y~0=v_main_~y~0_4, main_#t~post2=|v_main_#t~post2_1|, main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post2] [2022-02-14 20:52:53,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:52:53 BasicIcfg [2022-02-14 20:52:53,619 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:52:53,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:52:53,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:52:53,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:52:53,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:52:46" (1/4) ... [2022-02-14 20:52:53,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5466d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:52:53, skipping insertion in model container [2022-02-14 20:52:53,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:52:46" (2/4) ... [2022-02-14 20:52:53,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5466d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:52:53, skipping insertion in model container [2022-02-14 20:52:53,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:52:46" (3/4) ... [2022-02-14 20:52:53,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5466d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:52:53, skipping insertion in model container [2022-02-14 20:52:53,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:52:53" (4/4) ... [2022-02-14 20:52:53,624 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.iJordan [2022-02-14 20:52:53,634 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:52:53,635 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:52:53,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:52:53,665 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 20:52:53,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:52:53,674 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 20:52:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 20:52:53,679 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:52:53,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:52:53,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:52:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:52:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1291699483, now seen corresponding path program 1 times [2022-02-14 20:52:53,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:52:53,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723340371] [2022-02-14 20:52:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:52:53,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:52:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:52:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:52:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:52:53,815 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 20:52:53,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:52:53,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723340371] [2022-02-14 20:52:53,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723340371] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:52:53,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:52:53,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 20:52:53,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840224385] [2022-02-14 20:52:53,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:52:53,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 20:52:53,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:52:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 20:52:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 20:52:53,854 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 20:52:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:52:53,886 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-02-14 20:52:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 20:52:53,889 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 20:52:53,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:52:53,895 INFO L225 Difference]: With dead ends: 20 [2022-02-14 20:52:53,895 INFO L226 Difference]: Without dead ends: 13 [2022-02-14 20:52:53,896 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 20:52:53,899 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 20:52:53,900 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 20:52:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-14 20:52:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-14 20:52:53,921 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 20:52:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-14 20:52:53,922 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-02-14 20:52:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:52:53,923 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-14 20:52:53,923 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 20:52:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-14 20:52:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 20:52:53,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:52:53,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:52:53,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:52:53,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:52:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:52:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1292623004, now seen corresponding path program 1 times [2022-02-14 20:52:53,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:52:53,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455981475] [2022-02-14 20:52:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:52:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:52:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:52:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:52:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:52:53,993 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 20:52:53,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:52:53,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455981475] [2022-02-14 20:52:53,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455981475] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:52:53,994 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:52:53,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-14 20:52:53,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995093883] [2022-02-14 20:52:53,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:52:53,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-14 20:52:53,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:52:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-14 20:52:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-14 20:52:54,000 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 20:52:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:52:54,023 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-02-14 20:52:54,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-14 20:52:54,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 20:52:54,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:52:54,024 INFO L225 Difference]: With dead ends: 14 [2022-02-14 20:52:54,024 INFO L226 Difference]: Without dead ends: 14 [2022-02-14 20:52:54,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-14 20:52:54,027 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 20:52:54,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-02-14 20:52:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-14 20:52:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-14 20:52:54,033 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 20:52:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-14 20:52:54,035 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-14 20:52:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:52:54,037 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-14 20:52:54,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 20:52:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-14 20:52:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-14 20:52:54,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:52:54,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:52:54,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-14 20:52:54,042 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:52:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:52:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1443329038, now seen corresponding path program 1 times [2022-02-14 20:52:54,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:52:54,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470749232] [2022-02-14 20:52:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:52:54,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:52:54,057 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 20:52:54,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849713332] [2022-02-14 20:52:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:52:54,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:52:54,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:52:54,059 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 20:52:54,060 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 20:52:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:52:54,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-14 20:52:54,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:53:01,301 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 20:53:01,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:53:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-14 20:53:01,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:53:01,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470749232] [2022-02-14 20:53:01,477 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 20:53:01,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849713332] [2022-02-14 20:53:01,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849713332] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-14 20:53:01,477 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-14 20:53:01,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2022-02-14 20:53:01,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218418127] [2022-02-14 20:53:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:53:01,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 20:53:01,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:53:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 20:53:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-02-14 20:53:01,478 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 20:53:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:53:01,495 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-02-14 20:53:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 20:53:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 20:53:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:53:01,496 INFO L225 Difference]: With dead ends: 12 [2022-02-14 20:53:01,496 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 20:53:01,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-14 20:53:01,497 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 20:53:01,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-02-14 20:53:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 20:53:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 20:53:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-14 20:53:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 20:53:01,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-02-14 20:53:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:53:01,498 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 20:53:01,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 20:53:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 20:53:01,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 20:53:01,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 20:53:01,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-14 20:53:01,701 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 20:53:01,703 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-14 20:53:01,704 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 20:53:01,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:53:01 BasicIcfg [2022-02-14 20:53:01,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 20:53:01,706 INFO L158 Benchmark]: Toolchain (without parser) took 15225.43ms. Allocated memory was 182.5MB in the beginning and 273.7MB in the end (delta: 91.2MB). Free memory was 129.0MB in the beginning and 144.1MB in the end (delta: -15.0MB). Peak memory consumption was 77.4MB. Max. memory is 8.0GB. [2022-02-14 20:53:01,706 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 20:53:01,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.26ms. Allocated memory was 182.5MB in the beginning and 273.7MB in the end (delta: 91.2MB). Free memory was 128.9MB in the beginning and 245.5MB in the end (delta: -116.6MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-02-14 20:53:01,707 INFO L158 Benchmark]: Boogie Preprocessor took 17.19ms. Allocated memory is still 273.7MB. Free memory was 245.5MB in the beginning and 244.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 20:53:01,707 INFO L158 Benchmark]: RCFGBuilder took 176.45ms. Allocated memory is still 273.7MB. Free memory was 244.0MB in the beginning and 234.4MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-14 20:53:01,707 INFO L158 Benchmark]: IcfgTransformer took 6783.25ms. Allocated memory is still 273.7MB. Free memory was 234.4MB in the beginning and 211.5MB in the end (delta: 22.9MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-02-14 20:53:01,707 INFO L158 Benchmark]: TraceAbstraction took 8085.50ms. Allocated memory is still 273.7MB. Free memory was 210.9MB in the beginning and 144.1MB in the end (delta: 66.8MB). Peak memory consumption was 67.5MB. Max. memory is 8.0GB. [2022-02-14 20:53:01,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.26ms. Allocated memory was 182.5MB in the beginning and 273.7MB in the end (delta: 91.2MB). Free memory was 128.9MB in the beginning and 245.5MB in the end (delta: -116.6MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.19ms. Allocated memory is still 273.7MB. Free memory was 245.5MB in the beginning and 244.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 176.45ms. Allocated memory is still 273.7MB. Free memory was 244.0MB in the beginning and 234.4MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 6783.25ms. Allocated memory is still 273.7MB. Free memory was 234.4MB in the beginning and 211.5MB in the end (delta: 22.9MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 8085.50ms. Allocated memory is still 273.7MB. Free memory was 210.9MB in the beginning and 144.1MB in the end (delta: 66.8MB). Peak memory consumption was 67.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 2 QuantifiedInterpolants, 532 SizeOfPredicates, 3 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-14 20:53:01,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...