/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.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 12:31:26,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 12:31:26,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 12:31:26,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 12:31:26,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 12:31:26,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 12:31:26,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 12:31:26,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 12:31:26,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 12:31:26,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 12:31:26,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 12:31:26,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 12:31:26,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 12:31:26,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 12:31:26,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 12:31:26,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 12:31:26,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 12:31:26,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 12:31:26,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 12:31:26,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 12:31:26,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 12:31:26,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 12:31:26,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 12:31:26,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 12:31:26,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 12:31:26,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 12:31:26,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 12:31:26,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 12:31:26,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 12:31:26,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 12:31:26,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 12:31:26,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 12:31:26,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 12:31:26,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 12:31:26,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 12:31:26,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 12:31:26,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 12:31:26,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 12:31:26,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 12:31:26,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 12:31:26,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 12:31:26,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 12:31:26,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 12:31:26,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 12:31:26,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 12:31:26,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 12:31:26,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 12:31:26,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:31:26,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 12:31:26,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 12:31:26,805 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 12:31:26,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 12:31:27,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 12:31:27,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 12:31:27,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 12:31:27,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 12:31:27,039 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 12:31:27,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2022-01-31 12:31:27,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32171acb3/cf7f7f60527444609b1a2edbec6d6aa6/FLAG90717fd4c [2022-01-31 12:31:27,464 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 12:31:27,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2022-01-31 12:31:27,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32171acb3/cf7f7f60527444609b1a2edbec6d6aa6/FLAG90717fd4c [2022-01-31 12:31:27,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32171acb3/cf7f7f60527444609b1a2edbec6d6aa6 [2022-01-31 12:31:27,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 12:31:27,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 12:31:27,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 12:31:27,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 12:31:27,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 12:31:27,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57880c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27, skipping insertion in model container [2022-01-31 12:31:27,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 12:31:27,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 12:31:27,639 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.c.i.p+cfa-reducer.c[989,1002] [2022-01-31 12:31:27,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:31:27,685 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 12:31:27,703 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.c.i.p+cfa-reducer.c[989,1002] [2022-01-31 12:31:27,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:31:27,718 INFO L208 MainTranslator]: Completed translation [2022-01-31 12:31:27,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27 WrapperNode [2022-01-31 12:31:27,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 12:31:27,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 12:31:27,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 12:31:27,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 12:31:27,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 12:31:27,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 12:31:27,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 12:31:27,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 12:31:27,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:27,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:31:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:31:27,788 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) [2022-01-31 12:31:27,803 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 [2022-01-31 12:31:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 12:31:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 12:31:27,829 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 12:31:27,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 12:31:27,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 12:31:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 12:31:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 12:31:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 12:31:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 12:31:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 12:31:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 12:31:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 12:31:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 12:31:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 12:31:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 12:31:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 12:31:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 12:31:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 12:31:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 12:31:27,891 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 12:31:27,892 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 12:31:27,979 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 12:31:27,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 12:31:27,983 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 12:31:27,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:31:27 BoogieIcfgContainer [2022-01-31 12:31:27,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 12:31:27,985 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 12:31:27,985 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 12:31:27,986 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 12:31:27,989 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:31:27" (1/1) ... [2022-01-31 12:31:29,228 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 12:31:29,229 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~main____CPAchecker_TMP_0~0_1 v_main_~main__y~0_4) (= (+ v_main_~main__y~0_4 1) v_main_~main__y~0_3) (< v_main_~main__x~0_2 0) (= (+ v_main_~main__x~0_2 v_main_~main__y~0_4) v_main_~main__x~0_1)) InVars {main_~main__x~0=v_main_~main__x~0_2, main_~main__y~0=v_main_~main__y~0_4} OutVars{main_~main____CPAchecker_TMP_0~0=v_main_~main____CPAchecker_TMP_0~0_1, main_~main__x~0=v_main_~main__x~0_1, main_~main__y~0=v_main_~main__y~0_3} AuxVars[] AssignedVars[main_~main____CPAchecker_TMP_0~0, main_~main__x~0, main_~main__y~0] to Formula: (let ((.cse1 (< v_main_~main__x~0_2 0))) (or (let ((.cse0 (div (+ (- 1) (* (- 1) v_main_~main__y~0_4) v_main_~main__y~0_3) 2))) (and (= (+ (* 2 (* .cse0 v_main_~main__y~0_4)) (* 2 (* .cse0 .cse0)) .cse0 v_main_~main__x~0_2 v_main_~main__y~0_4) v_main_~main__x~0_1) (= (mod (+ v_main_~main__y~0_4 v_main_~main__y~0_3 1) 2) 0) (= v_main_~main____CPAchecker_TMP_0~0_1 (+ (* 2 .cse0) v_main_~main__y~0_4)) (<= 0 .cse0) .cse1 (forall ((v_itHalf_1 Int)) (or (not (<= v_itHalf_1 (div (+ (- 1) (* (- 1) v_main_~main__y~0_4) v_main_~main__y~0_3) 2))) (< (+ (* 2 (* v_itHalf_1 v_main_~main__y~0_4)) (* 2 (* v_itHalf_1 v_itHalf_1)) v_main_~main__x~0_2) v_itHalf_1) (not (<= 1 v_itHalf_1)))))) (let ((.cse2 (div (+ (- 1) (* v_main_~main____CPAchecker_TMP_0~0_1 (- 1)) v_main_~main__y~0_4) (- 2)))) (and (= (+ (* 2 .cse2) v_main_~main__y~0_4) v_main_~main__y~0_3) (forall ((v_itHalf_1 Int)) (or (not (<= 0 v_itHalf_1)) (not (<= (+ v_itHalf_1 1) (div (+ (- 1) (* v_main_~main____CPAchecker_TMP_0~0_1 (- 1)) v_main_~main__y~0_4) (- 2)))) (< (+ v_itHalf_1 (* 2 (* v_itHalf_1 v_main_~main__y~0_4)) (* 2 (* v_itHalf_1 v_itHalf_1)) v_main_~main__x~0_2 v_main_~main__y~0_4) 0))) .cse1 (< 0 .cse2) (= (+ (* (* .cse2 v_main_~main__y~0_4) 2) (* 2 (* .cse2 .cse2)) v_main_~main__x~0_2) (+ .cse2 v_main_~main__x~0_1)) (= (mod (+ v_main_~main____CPAchecker_TMP_0~0_1 v_main_~main__y~0_4 1) 2) 0))) (and (= v_main_~main__y~0_4 v_main_~main__y~0_3) (= v_main_~main____CPAchecker_TMP_0~0_2 v_main_~main____CPAchecker_TMP_0~0_1) (= v_main_~main__x~0_2 v_main_~main__x~0_1) (<= 0 v_main_~main__x~0_2)))) InVars {main_~main____CPAchecker_TMP_0~0=v_main_~main____CPAchecker_TMP_0~0_2, main_~main__x~0=v_main_~main__x~0_2, main_~main__y~0=v_main_~main__y~0_4} OutVars{main_~main____CPAchecker_TMP_0~0=v_main_~main____CPAchecker_TMP_0~0_1, main_~main__x~0=v_main_~main__x~0_1, main_~main__y~0=v_main_~main__y~0_3} AuxVars[] AssignedVars[main_~main____CPAchecker_TMP_0~0, main_~main__x~0, main_~main__y~0] [2022-01-31 12:31:29,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:31:29 BasicIcfg [2022-01-31 12:31:29,233 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 12:31:29,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 12:31:29,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 12:31:29,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 12:31:29,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 12:31:27" (1/4) ... [2022-01-31 12:31:29,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d028e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:31:29, skipping insertion in model container [2022-01-31 12:31:29,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:27" (2/4) ... [2022-01-31 12:31:29,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d028e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:31:29, skipping insertion in model container [2022-01-31 12:31:29,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:31:27" (3/4) ... [2022-01-31 12:31:29,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d028e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:31:29, skipping insertion in model container [2022-01-31 12:31:29,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:31:29" (4/4) ... [2022-01-31 12:31:29,253 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.cJordan [2022-01-31 12:31:29,257 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 12:31:29,257 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 12:31:29,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 12:31:29,293 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 [2022-01-31 12:31:29,293 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 12:31:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:31:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 12:31:29,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:31:29,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:31:29,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:31:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:31:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 323261602, now seen corresponding path program 1 times [2022-01-31 12:31:29,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:31:29,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449764715] [2022-01-31 12:31:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:31:29,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:31:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:31:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:31:29,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:31:29,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449764715] [2022-01-31 12:31:29,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449764715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:31:29,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 12:31:29,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 12:31:29,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717003775] [2022-01-31 12:31:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:31:29,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 12:31:29,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:31:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 12:31:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 12:31:29,544 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:31:29,609 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-01-31 12:31:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 12:31:29,612 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-31 12:31:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:31:29,617 INFO L225 Difference]: With dead ends: 19 [2022-01-31 12:31:29,618 INFO L226 Difference]: Without dead ends: 13 [2022-01-31 12:31:29,619 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 [2022-01-31 12:31:29,624 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:31:29,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-01-31 12:31:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-31 12:31:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-31 12:31:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-01-31 12:31:29,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-01-31 12:31:29,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:31:29,654 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-01-31 12:31:29,655 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-01-31 12:31:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 12:31:29,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:31:29,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:31:29,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 12:31:29,657 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:31:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:31:29,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1431144312, now seen corresponding path program 1 times [2022-01-31 12:31:29,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:31:29,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984352882] [2022-01-31 12:31:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:31:29,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:31:29,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:31:29,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614352174] [2022-01-31 12:31:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:31:29,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:31:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:31:29,695 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) [2022-01-31 12:31:29,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 12:31:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:30,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 12:31:30,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:31:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:31:32,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:31:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:31:32,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:31:32,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984352882] [2022-01-31 12:31:32,666 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:31:32,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614352174] [2022-01-31 12:31:32,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614352174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:31:32,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:31:32,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-31 12:31:32,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349585930] [2022-01-31 12:31:32,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:31:32,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 12:31:32,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:31:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 12:31:32,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 12:31:32,674 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:32,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:31:32,681 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-01-31 12:31:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 12:31:32,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-31 12:31:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:31:32,683 INFO L225 Difference]: With dead ends: 15 [2022-01-31 12:31:32,683 INFO L226 Difference]: Without dead ends: 14 [2022-01-31 12:31:32,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 12:31:32,687 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:31:32,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-01-31 12:31:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-31 12:31:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-01-31 12:31:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-01-31 12:31:32,699 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-01-31 12:31:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:31:32,699 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-01-31 12:31:32,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-01-31 12:31:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 12:31:32,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:31:32,700 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:31:32,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 12:31:32,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:31:32,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:31:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:31:32,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1415769954, now seen corresponding path program 2 times [2022-01-31 12:31:32,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:31:32,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244737712] [2022-01-31 12:31:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:31:32,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:31:32,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:31:32,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556849178] [2022-01-31 12:31:32,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 12:31:32,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:31:32,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:31:32,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:31:32,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 12:31:34,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 12:31:34,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:31:34,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 12:31:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:31:45,675 WARN L228 SmtUtils]: Spent 10.82s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 12:32:02,682 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aux_div_v_main_~main__y~0_14_85 Int) (aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 Int)) (let ((.cse1 (* 2 c_main_~main__y~0)) (.cse0 (* 2 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71))) (and (<= (+ (* 2 (* c_main_~main__y~0 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) (* 2 (* aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_14_85)) aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_14_85 50) (+ (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_85)) (* 2 (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) c_main_~main__y~0)) (<= .cse0 .cse1) (< c_main_~main__y~0 (+ aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_14_85)) (= (+ (* (- 2) c_main_~main__y~0 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) (* (- 1) aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) (* 2 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) (* (- 1) aux_div_v_main_~main__y~0_14_85) c_main_~main__y~0 (* (- 2) aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_14_85) (* 2 c_main_~main__y~0 aux_div_v_main_~main__y~0_14_85) (- 50)) c_main_~main__x~0) (forall ((v_itHalf_1 Int)) (or (not (<= 0 v_itHalf_1)) (< (+ (* 2 (* v_itHalf_1 c_main_~main__y~0)) v_itHalf_1 c_main_~main__y~0 (* 2 (* v_itHalf_1 v_itHalf_1))) (+ (* 2 aux_div_v_main_~main__y~0_14_85) (* (* v_itHalf_1 aux_div_v_main_~main__y~0_14_85) 4) 50)) (not (<= (+ v_itHalf_1 c_main_~main__y~0 1) (+ aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_14_85))))) (< .cse1 (+ .cse0 2))))) (exists ((aux_div_main_~main____CPAchecker_TMP_0~0_85 Int) (aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 Int) (aux_div_v_main_~main__y~0_14_85 Int) (aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 Int) (aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 Int)) (let ((.cse4 (* 2 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63))) (let ((.cse3 (+ .cse4 (* 2 aux_div_main_~main____CPAchecker_TMP_0~0_85))) (.cse9 (+ (* aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 4) (* 2 c_main_~main__y~0))) (.cse7 (* 2 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) (.cse8 (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 4)) (.cse2 (* 2 aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113))) (and (<= .cse2 .cse3) (forall ((v_itHalf_1 Int)) (or (< (+ (* 4 (* v_itHalf_1 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63)) (* aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 4) (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_85)) (* 2 (* v_itHalf_1 c_main_~main__y~0)) (* 2 (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) v_itHalf_1 (* (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) 4) (* (* aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 aux_div_v_main_~main__y~0_14_85) 4) (* 2 c_main_~main__y~0) (* 2 (* v_itHalf_1 v_itHalf_1))) (+ (* (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63) 4) (* 2 (* c_main_~main__y~0 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) (* 2 (* aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_14_85)) (* (* v_itHalf_1 aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113) 4) aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_14_85 (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 4) (* 4 (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 aux_div_v_main_~main__y~0_14_85)) 50)) (not (<= 0 v_itHalf_1)) (not (<= (+ v_itHalf_1 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 1) aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113)))) (<= 0 .cse4) (< 0 aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113) (= (+ aux_div_main_~main____CPAchecker_TMP_0~0_85 c_main_~main__x~0) (let ((.cse6 (* (- 2) aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113))) (let ((.cse5 (+ .cse4 c_main_~main__y~0 .cse6))) (+ (* (- 1) aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) .cse4 (* (* aux_div_main_~main____CPAchecker_TMP_0~0_85 aux_div_main_~main____CPAchecker_TMP_0~0_85) 2) (* 2 .cse5 aux_div_v_main_~main__y~0_14_85) (* 2 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) (* (- 1) aux_div_v_main_~main__y~0_14_85) c_main_~main__y~0 (* (- 2) .cse5 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) (* (- 2) aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_14_85) (- 50) .cse6 (* (* .cse5 aux_div_main_~main____CPAchecker_TMP_0~0_85) 2))))) (< (+ .cse4 c_main_~main__y~0) (+ .cse2 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_14_85)) (< .cse3 (+ 2 .cse2)) (<= (+ .cse7 .cse8) .cse9) (< .cse9 (+ .cse7 2 .cse8)) (< (+ (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_85)) (* 2 (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) .cse4 (* (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71) 4) c_main_~main__y~0 (* (* aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 aux_div_v_main_~main__y~0_14_85) 4)) (+ (* (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63) 4) (* 2 (* c_main_~main__y~0 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) (* 2 (* aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_14_85)) .cse2 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_14_85 (* 4 (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 aux_div_v_main_~main__y~0_14_85)) 50)) (< .cse4 2))))) (exists ((aux_div_v_main_~main__y~0_15_50 Int) (aux_div_v_main_~main__y~0_14_85 Int) (aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 Int)) (let ((.cse11 (* 2 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) (.cse10 (* aux_div_v_main_~main__y~0_15_50 4)) (.cse12 (* 2 c_main_~main__y~0)) (.cse18 (* 2 (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71))) (.cse21 (* 2 aux_div_v_main_~main__y~0_15_50)) (.cse19 (* 2 (* c_main_~main__y~0 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71))) (.cse20 (* (* aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_15_50) 4)) (.cse13 (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_85))) (.cse15 (* 2 (* aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_14_85))) (.cse16 (* (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_15_50) 4)) (.cse17 (* 3 aux_div_v_main_~main__y~0_14_85))) (and (< .cse10 (+ .cse11 .cse12 4)) (<= (+ .cse11 2 .cse12) .cse10) (let ((.cse14 (div (+ (* (- 2) aux_div_v_main_~main__y~0_15_50) .cse12) 2))) (= (+ .cse13 (* (* .cse14 c_main_~main__y~0) 2) .cse14 .cse15 .cse16 52 .cse12 .cse17 c_main_~main__x~0) (+ (* 2 (* .cse14 .cse14)) .cse18 .cse19 (* (* .cse14 aux_div_v_main_~main__y~0_15_50) 4) .cse10 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 .cse20))) (forall ((v_itHalf_1 Int)) (or (not (<= 1 v_itHalf_1)) (< (+ (* 2 (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) (* 2 aux_div_v_main_~main__y~0_15_50) (* 2 (* c_main_~main__y~0 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71)) aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 (* 4 (* v_itHalf_1 aux_div_v_main_~main__y~0_15_50)) (* 2 (* v_itHalf_1 v_itHalf_1)) (* (* aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_15_50) 4)) (+ (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_85)) (* 2 (* v_itHalf_1 c_main_~main__y~0)) 51 (* 2 (* aux_div_v_main_~main__y~0_14_85 aux_div_v_main_~main__y~0_14_85)) (* (* aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_15_50) 4) c_main_~main__y~0 (* v_itHalf_1 3) (* 3 aux_div_v_main_~main__y~0_14_85))) (not (<= (+ v_itHalf_1 aux_div_v_main_~main__y~0_15_50) c_main_~main__y~0)))) (<= aux_div_v_main_~main__y~0_15_50 c_main_~main__y~0) (< .cse21 (+ c_main_~main__y~0 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 aux_div_v_main_~main__y~0_14_85 1)) (< (+ .cse18 .cse21 .cse19 aux_div_v_main_~main____CPAchecker_TMP_0~0_6_71 .cse20) (+ .cse13 51 .cse15 .cse16 c_main_~main__y~0 .cse17))))) (exists ((aux_div_v_main_~main__y~0_15_50 Int) (aux_div_v_main_~main__y~0_14_50 Int)) (let ((.cse22 (* 2 aux_div_v_main_~main__y~0_15_50)) (.cse26 (* (* aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_15_50) 4)) (.cse27 (* 2 c_main_~main__y~0)) (.cse23 (* 2 (* aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_14_50))) (.cse25 (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50)))) (and (<= (+ c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50 1) .cse22) (let ((.cse24 (div (+ (* (- 2) aux_div_v_main_~main__y~0_15_50) .cse27) 2))) (= (+ .cse23 (* (* .cse24 c_main_~main__y~0) 2) .cse22 .cse24 .cse25 c_main_~main__x~0 50) (+ .cse26 (* 2 (* .cse24 .cse24)) (* (* .cse24 aux_div_v_main_~main__y~0_15_50) 4) c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50))) (forall ((v_itHalf_1 Int)) (or (not (<= 1 v_itHalf_1)) (not (<= (+ v_itHalf_1 aux_div_v_main_~main__y~0_15_50) c_main_~main__y~0)) (< (+ (* (* aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_15_50) 4) (* 2 c_main_~main__y~0) (* 4 (* v_itHalf_1 aux_div_v_main_~main__y~0_15_50)) aux_div_v_main_~main__y~0_14_50 (* 2 (* v_itHalf_1 v_itHalf_1))) (+ (* 2 (* aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_14_50)) (* 2 (* v_itHalf_1 c_main_~main__y~0)) 49 (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50)) (* aux_div_v_main_~main__y~0_15_50 4) (* v_itHalf_1 3))))) (< (+ .cse26 .cse27 aux_div_v_main_~main__y~0_14_50) (+ .cse23 49 .cse25 (* aux_div_v_main_~main__y~0_15_50 4))) (<= aux_div_v_main_~main__y~0_15_50 c_main_~main__y~0)))) (exists ((aux_div_v_main_~main__y~0_14_50 Int)) (let ((.cse28 (* 3 aux_div_v_main_~main__y~0_14_50))) (and (<= (+ (* 2 (* aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_14_50)) 51 (* 2 c_main_~main__y~0)) (+ (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50)) .cse28)) (= (+ (- 51) (* (- 2) c_main_~main__y~0) .cse28 (* 2 c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50) (* (- 2) aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_14_50)) c_main_~main__x~0) (<= aux_div_v_main_~main__y~0_14_50 c_main_~main__y~0) (forall ((v_itHalf_1 Int)) (or (not (<= 1 v_itHalf_1)) (< (+ (* (* v_itHalf_1 aux_div_v_main_~main__y~0_14_50) 4) (* 2 (* v_itHalf_1 v_itHalf_1))) (+ (* 2 (* v_itHalf_1 c_main_~main__y~0)) (* v_itHalf_1 3) 50)) (not (<= (+ v_itHalf_1 aux_div_v_main_~main__y~0_14_50) c_main_~main__y~0))))))) (exists ((aux_div_main_~main____CPAchecker_TMP_0~0_85 Int) (aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 Int) (aux_div_v_main_~main__y~0_14_50 Int) (aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 Int)) (let ((.cse34 (* 2 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63))) (let ((.cse30 (+ .cse34 (* 2 aux_div_main_~main____CPAchecker_TMP_0~0_85))) (.cse29 (* 2 aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113)) (.cse31 (* 3 aux_div_v_main_~main__y~0_14_50)) (.cse33 (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 4))) (and (<= .cse29 .cse30) (= (+ aux_div_main_~main____CPAchecker_TMP_0~0_85 c_main_~main__x~0) (let ((.cse32 (+ .cse34 c_main_~main__y~0 (* (- 2) aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113)))) (+ (- 51) (* (- 4) aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63) (* (* aux_div_main_~main____CPAchecker_TMP_0~0_85 aux_div_main_~main____CPAchecker_TMP_0~0_85) 2) (* (- 2) c_main_~main__y~0) .cse31 (* 2 .cse32 aux_div_v_main_~main__y~0_14_50) .cse33 (* (* .cse32 aux_div_main_~main____CPAchecker_TMP_0~0_85) 2) (* (- 2) aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_14_50)))) (<= (+ .cse29 aux_div_v_main_~main__y~0_14_50) (+ .cse34 c_main_~main__y~0)) (<= 0 .cse34) (< 0 aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113) (< .cse30 (+ 2 .cse29)) (forall ((v_itHalf_1 Int)) (or (not (<= 0 v_itHalf_1)) (not (<= (+ v_itHalf_1 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 1) aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113)) (< (+ (* 4 (* v_itHalf_1 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63)) (* 2 (* v_itHalf_1 c_main_~main__y~0)) v_itHalf_1 (* 4 (* aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 aux_div_v_main_~main__y~0_14_50)) (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50)) (* 2 aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113) (* 3 aux_div_v_main_~main__y~0_14_50) (* 2 (* v_itHalf_1 v_itHalf_1))) (+ (* 2 (* aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_14_50)) (* 2 aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63) 51 c_main_~main__y~0 (* (* v_itHalf_1 aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113) 4) (* (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 aux_div_v_main_~main__y~0_14_50) 4))))) (< (+ (* 4 (* aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 aux_div_v_main_~main__y~0_14_50)) (* 2 (* c_main_~main__y~0 aux_div_v_main_~main__y~0_14_50)) .cse31 .cse33) (+ (* aux_div_aux_mod_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113_63 4) (* 2 (* aux_div_v_main_~main__y~0_14_50 aux_div_v_main_~main__y~0_14_50)) 51 (* 2 c_main_~main__y~0) (* (* aux_div_aux_mod_main_~main____CPAchecker_TMP_0~0_85_113 aux_div_v_main_~main__y~0_14_50) 4))) (< .cse34 2)))))) is different from true [2022-01-31 12:32:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-31 12:32:46,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:32:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 12:32:46,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:32:46,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244737712] [2022-01-31 12:32:46,517 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:32:46,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556849178] [2022-01-31 12:32:46,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556849178] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 12:32:46,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 12:32:46,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-01-31 12:32:46,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770830966] [2022-01-31 12:32:46,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:32:46,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 12:32:46,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:32:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 12:32:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-01-31 12:32:46,519 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:32:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:32:46,534 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-01-31 12:32:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 12:32:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-01-31 12:32:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:32:46,535 INFO L225 Difference]: With dead ends: 12 [2022-01-31 12:32:46,535 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 12:32:46,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-01-31 12:32:46,536 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:32:46,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-01-31 12:32:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 12:32:46,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 12:32:46,537 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) [2022-01-31 12:32:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 12:32:46,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-01-31 12:32:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:32:46,538 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 12:32:46,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:32:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 12:32:46,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 12:32:46,540 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 12:32:46,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-31 12:32:46,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 12:32:46,752 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2022-01-31 12:32:46,753 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 12:32:46,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:32:46 BasicIcfg [2022-01-31 12:32:46,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 12:32:46,756 INFO L158 Benchmark]: Toolchain (without parser) took 79271.90ms. Allocated memory was 176.2MB in the beginning and 282.1MB in the end (delta: 105.9MB). Free memory was 121.9MB in the beginning and 223.1MB in the end (delta: -101.1MB). Peak memory consumption was 5.1MB. Max. memory is 8.0GB. [2022-01-31 12:32:46,756 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 176.2MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 12:32:46,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.82ms. Allocated memory was 176.2MB in the beginning and 282.1MB in the end (delta: 105.9MB). Free memory was 121.7MB in the beginning and 255.1MB in the end (delta: -133.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 12:32:46,757 INFO L158 Benchmark]: Boogie Preprocessor took 35.92ms. Allocated memory is still 282.1MB. Free memory was 255.1MB in the beginning and 253.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 12:32:46,757 INFO L158 Benchmark]: RCFGBuilder took 228.42ms. Allocated memory is still 282.1MB. Free memory was 253.7MB in the beginning and 243.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 12:32:46,757 INFO L158 Benchmark]: IcfgTransformer took 1248.31ms. Allocated memory is still 282.1MB. Free memory was 243.2MB in the beginning and 217.5MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-01-31 12:32:46,757 INFO L158 Benchmark]: TraceAbstraction took 77520.51ms. Allocated memory is still 282.1MB. Free memory was 217.0MB in the beginning and 223.1MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 12:32:46,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 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 0.11ms. Allocated memory is still 176.2MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 233.82ms. Allocated memory was 176.2MB in the beginning and 282.1MB in the end (delta: 105.9MB). Free memory was 121.7MB in the beginning and 255.1MB in the end (delta: -133.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.92ms. Allocated memory is still 282.1MB. Free memory was 255.1MB in the beginning and 253.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 228.42ms. Allocated memory is still 282.1MB. Free memory was 253.7MB in the beginning and 243.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 1248.31ms. Allocated memory is still 282.1MB. Free memory was 243.2MB in the beginning and 217.5MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 77520.51ms. Allocated memory is still 282.1MB. Free memory was 217.0MB in the beginning and 223.1MB in the end (delta: -6.1MB). There was no memory consumed. 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: 48]: 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 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 31 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2.0s SatisfiabilityAnalysisTime, 74.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 3 QuantifiedInterpolants, 1718 SizeOfPredicates, 11 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-31 12:32:46,821 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...