/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/count_up_down-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 14:40:01,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 14:40:01,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 14:40:01,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 14:40:01,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 14:40:01,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 14:40:01,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 14:40:01,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 14:40:01,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 14:40:01,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 14:40:01,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 14:40:01,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 14:40:01,846 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 14:40:01,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 14:40:01,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 14:40:01,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 14:40:01,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 14:40:01,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 14:40:01,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 14:40:01,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 14:40:01,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 14:40:01,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 14:40:01,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 14:40:01,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 14:40:01,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 14:40:01,881 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 14:40:01,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 14:40:01,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 14:40:01,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 14:40:01,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 14:40:01,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 14:40:01,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 14:40:01,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 14:40:01,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 14:40:01,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 14:40:01,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 14:40:01,884 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 14:40:01,884 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 14:40:02,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 14:40:02,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 14:40:02,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 14:40:02,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 14:40:02,088 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 14:40:02,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-1.c [2022-03-17 14:40:02,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3afa5183/9e9b8cec0a0d48cd9f78a9aaf3e6e26b/FLAG0413ff06e [2022-03-17 14:40:02,496 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 14:40:02,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-1.c [2022-03-17 14:40:02,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3afa5183/9e9b8cec0a0d48cd9f78a9aaf3e6e26b/FLAG0413ff06e [2022-03-17 14:40:02,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3afa5183/9e9b8cec0a0d48cd9f78a9aaf3e6e26b [2022-03-17 14:40:02,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 14:40:02,510 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 14:40:02,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 14:40:02,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 14:40:02,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 14:40:02,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7608c833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02, skipping insertion in model container [2022-03-17 14:40:02,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 14:40:02,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 14:40:02,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-1.c[327,340] [2022-03-17 14:40:02,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 14:40:02,682 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 14:40:02,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-1.c[327,340] [2022-03-17 14:40:02,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 14:40:02,710 INFO L208 MainTranslator]: Completed translation [2022-03-17 14:40:02,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02 WrapperNode [2022-03-17 14:40:02,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 14:40:02,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 14:40:02,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 14:40:02,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 14:40:02,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 14:40:02,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 14:40:02,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 14:40:02,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 14:40:02,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:02,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 14:40:02,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:40:02,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 14:40:02,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 14:40:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 14:40:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 14:40:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 14:40:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 14:40:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 14:40:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 14:40:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 14:40:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 14:40:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 14:40:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 14:40:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-17 14:40:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 14:40:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 14:40:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 14:40:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 14:40:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 14:40:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 14:40:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 14:40:02,841 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 14:40:02,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 14:40:02,920 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 14:40:02,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 14:40:02,924 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 14:40:02,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:40:02 BoogieIcfgContainer [2022-03-17 14:40:02,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 14:40:02,933 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 14:40:02,934 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 14:40:02,934 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 14:40:02,936 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:40:02" (1/1) ... [2022-03-17 14:40:03,109 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-17 14:40:03,110 INFO L91 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~x~0_3 1) v_main_~x~0_4) (< 0 (mod v_main_~x~0_4 4294967296)) (= v_main_~y~0_2 (+ v_main_~y~0_3 1))) InVars {main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_3} OutVars{main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2, main_#t~post5=|v_main_#t~post5_1|, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] to Formula: (let ((.cse0 (mod v_main_~x~0_4 4294967296))) (or (and (= |v_main_#t~post5_3| |v_main_#t~post5_1|) (= v_main_~x~0_4 v_main_~x~0_3) (= |v_main_#t~post6_3| |v_main_#t~post6_1|) (<= .cse0 0) (= v_main_~y~0_3 v_main_~y~0_2)) (and (< v_main_~y~0_3 v_main_~y~0_2) (< 0 .cse0) (forall ((v_it_1 Int)) (or (< 0 (mod (+ v_main_~x~0_4 (* v_it_1 4294967295)) 4294967296)) (not (<= (+ v_main_~y~0_3 v_it_1 1) v_main_~y~0_2)) (not (<= 1 v_it_1)))) (= v_main_~x~0_3 (+ v_main_~x~0_4 v_main_~y~0_3 (* (- 1) v_main_~y~0_2)))))) InVars {main_~y~0=v_main_~y~0_3, main_#t~post5=|v_main_#t~post5_3|, main_~x~0=v_main_~x~0_4, main_#t~post6=|v_main_#t~post6_3|} OutVars{main_~y~0=v_main_~y~0_2, main_#t~post5=|v_main_#t~post5_1|, main_~x~0=v_main_~x~0_3, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] [2022-03-17 14:40:03,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 02:40:03 BasicIcfg [2022-03-17 14:40:03,113 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 14:40:03,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 14:40:03,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 14:40:03,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 14:40:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:40:02" (1/4) ... [2022-03-17 14:40:03,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fa40c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:40:03, skipping insertion in model container [2022-03-17 14:40:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:40:02" (2/4) ... [2022-03-17 14:40:03,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fa40c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:40:03, skipping insertion in model container [2022-03-17 14:40:03,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:40:02" (3/4) ... [2022-03-17 14:40:03,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fa40c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:40:03, skipping insertion in model container [2022-03-17 14:40:03,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 02:40:03" (4/4) ... [2022-03-17 14:40:03,119 INFO L111 eAbstractionObserver]: Analyzing ICFG count_up_down-1.cJordan [2022-03-17 14:40:03,122 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 14:40:03,122 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 14:40:03,147 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 14:40:03,152 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 14:40:03,152 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 14:40:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-17 14:40:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-17 14:40:03,164 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:40:03,164 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:40:03,165 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:40:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:40:03,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-03-17 14:40:03,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:40:03,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404692882] [2022-03-17 14:40:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:40:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:40:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:40:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:40:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:40:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:40:03,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:40:03,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404692882] [2022-03-17 14:40:03,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404692882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 14:40:03,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 14:40:03,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 14:40:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990842912] [2022-03-17 14:40:03,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 14:40:03,314 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 14:40:03,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:40:03,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 14:40:03,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 14:40:03,353 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:40:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:40:03,384 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-17 14:40:03,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 14:40:03,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-17 14:40:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:40:03,392 INFO L225 Difference]: With dead ends: 18 [2022-03-17 14:40:03,393 INFO L226 Difference]: Without dead ends: 12 [2022-03-17 14:40:03,394 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 14:40:03,397 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 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 [2022-03-17 14:40:03,398 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 14:40:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-17 14:40:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-17 14:40:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:40:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-17 14:40:03,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-17 14:40:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:40:03,421 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-17 14:40:03,421 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:40:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-17 14:40:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-17 14:40:03,422 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:40:03,422 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:40:03,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 14:40:03,423 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:40:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:40:03,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-03-17 14:40:03,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:40:03,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740355117] [2022-03-17 14:40:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:40:03,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:40:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:40:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:40:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:40:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:40:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:40:03,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740355117] [2022-03-17 14:40:03,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740355117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 14:40:03,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 14:40:03,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 14:40:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807198192] [2022-03-17 14:40:03,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 14:40:03,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 14:40:03,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:40:03,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 14:40:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-17 14:40:03,626 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:40:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:40:03,703 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-03-17 14:40:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 14:40:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-17 14:40:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:40:03,704 INFO L225 Difference]: With dead ends: 16 [2022-03-17 14:40:03,705 INFO L226 Difference]: Without dead ends: 13 [2022-03-17 14:40:03,709 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-17 14:40:03,710 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 14:40:03,710 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-03-17 14:40:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-17 14:40:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-17 14:40:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:40:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-17 14:40:03,717 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-17 14:40:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:40:03,717 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-17 14:40:03,718 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:40:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-17 14:40:03,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 14:40:03,720 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:40:03,725 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:40:03,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 14:40:03,726 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:40:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:40:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash -814146699, now seen corresponding path program 1 times [2022-03-17 14:40:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:40:03,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362671357] [2022-03-17 14:40:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:40:03,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:40:03,750 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-03-17 14:40:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:40:03,799 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-03-17 14:40:04,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:40:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:40:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:40:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:40:04,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362671357] [2022-03-17 14:40:04,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362671357] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:40:04,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960772124] [2022-03-17 14:40:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:40:04,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:40:04,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:40:04,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 14:40:04,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 14:40:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:40:04,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 14:40:04,122 INFO L286 TraceCheckSpWp]: Computing forward predicates...