/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/in-de32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:36:01,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:36:01,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:36:01,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:36:01,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:36:01,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:36:01,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:36:01,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:36:01,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:36:01,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:36:01,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:36:01,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:36:01,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:36:01,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:36:01,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:36:01,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:36:01,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:36:01,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:36:01,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:36:01,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:36:01,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:36:01,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:36:01,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:36:01,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:36:01,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:36:01,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:36:01,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:36:01,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:36:01,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:36:01,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:36:01,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:36:01,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:36:01,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:36:01,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:36:01,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:36:01,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:36:01,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:36:01,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:36:01,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:36:01,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:36:01,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:36:01,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:36:01,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:36:01,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:36:01,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:36:01,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:36:01,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:36:01,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:36:01,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:36:01,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:36:01,719 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:36:01,720 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:36:02,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:36:02,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:36:02,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:36:02,110 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:36:02,111 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:36:02,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de32.c [2021-05-02 18:36:02,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7035cb9eb/d52cde4841a746a8a05bce566ce9b293/FLAG71b33c975 [2021-05-02 18:36:02,513 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:36:02,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de32.c [2021-05-02 18:36:02,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7035cb9eb/d52cde4841a746a8a05bce566ce9b293/FLAG71b33c975 [2021-05-02 18:36:02,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7035cb9eb/d52cde4841a746a8a05bce566ce9b293 [2021-05-02 18:36:02,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:36:02,534 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:36:02,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:36:02,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:36:02,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:36:02,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c235d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02, skipping insertion in model container [2021-05-02 18:36:02,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:36:02,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:36:02,674 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de32.c[368,381] [2021-05-02 18:36:02,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:36:02,693 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:36:02,704 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de32.c[368,381] [2021-05-02 18:36:02,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:36:02,721 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:36:02,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02 WrapperNode [2021-05-02 18:36:02,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:36:02,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:36:02,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:36:02,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:36:02,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... [2021-05-02 18:36:02,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:36:02,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:36:02,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:36:02,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:36:02,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:36:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:36:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:36:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:36:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:36:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:36:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:36:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:36:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:36:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:36:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 18:36:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:36:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:36:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:36:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:36:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:36:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:36:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:36:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:36:03,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:36:03,097 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-02 18:36:03,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:36:03 BoogieIcfgContainer [2021-05-02 18:36:03,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:36:03,099 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:36:03,099 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:36:03,099 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:36:03,101 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:36:03" (1/1) ... [2021-05-02 18:36:03,199 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 (mod v_main_~x~0_7 4294967296)) InVars {main_~x~0=v_main_~x~0_7} OutVars{main_~x~0=v_main_~x~0_7} AuxVars[] AssignedVars[] [2021-05-02 18:36:03,229 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 92.0 percent of original size [2021-05-02 18:36:03,424 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 92.0 percent of original size 69 [2021-05-02 18:36:03,473 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~x~0_6 1) v_main_~x~0_7) (< 0 (mod v_main_~x~0_7 4294967296)) (= v_main_~y~0_5 (+ v_main_~y~0_6 1))) InVars {main_~x~0=v_main_~x~0_7, main_~y~0=v_main_~y~0_6} OutVars{main_~x~0=v_main_~x~0_6, main_~y~0=v_main_~y~0_5, main_#t~post8=|v_main_#t~post8_1|, main_#t~post9=|v_main_#t~post9_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post8, main_#t~post9] with Formula: (let ((.cse0 (mod v_main_~x~0_7 4294967296))) (or (and (= v_main_~y~0_5 (+ v_itFin_1 v_main_~y~0_6)) (= v_main_~x~0_7 (+ v_itFin_1 v_main_~x~0_6)) (<= (mod (+ v_main_~x~0_7 (* v_itFin_1 4294967295)) 4294967296) 0) (< 0 v_itFin_1) (< (div (+ (* v_itFin_1 (- 1)) (* v_main_~x~0_7 (- 4294967295))) (- 4294967296)) (+ (div (* v_main_~x~0_7 4294967295) 4294967296) 2)) (< 0 .cse0)) (and (= v_main_~y~0_6 v_main_~y~0_5) (= |v_main_#t~post9_3| |v_main_#t~post9_1|) (= v_itFin_1 0) (= |v_main_#t~post8_3| |v_main_#t~post8_1|) (= v_main_~x~0_7 v_main_~x~0_6) (<= .cse0 0)))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_#t~post8=|v_main_#t~post8_3|, main_#t~post9=|v_main_#t~post9_3|} OutVars{main_~y~0=v_main_~y~0_5, main_~x~0=v_main_~x~0_6, main_#t~post8=|v_main_#t~post8_1|, main_#t~post9=|v_main_#t~post9_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0, main_#t~post8, main_#t~post9] [2021-05-02 18:36:03,491 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 (mod v_main_~z~0_5 4294967296)) InVars {main_~z~0=v_main_~z~0_5} OutVars{main_~z~0=v_main_~z~0_5} AuxVars[] AssignedVars[] [2021-05-02 18:36:03,505 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 92.0 percent of original size [2021-05-02 18:36:03,656 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 92.0 percent of original size 69 [2021-05-02 18:36:03,721 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= v_main_~z~0_5 (+ v_main_~z~0_4 1)) (= (+ v_main_~x~0_9 1) v_main_~x~0_8) (< 0 (mod v_main_~z~0_5 4294967296))) InVars {main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_5} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_4, main_#t~post11=|v_main_#t~post11_1|} AuxVars[] AssignedVars[main_#t~post10, main_~x~0, main_~z~0, main_#t~post11] with Formula: (let ((.cse0 (mod v_main_~z~0_5 4294967296))) (or (and (= v_main_~x~0_9 v_main_~x~0_8) (= |v_main_#t~post11_3| |v_main_#t~post11_1|) (= |v_main_#t~post10_3| |v_main_#t~post10_1|) (= v_itFin_2 0) (<= .cse0 0) (= v_main_~z~0_5 v_main_~z~0_4)) (and (< 0 v_itFin_2) (<= (mod (+ v_main_~z~0_5 (* v_itFin_2 4294967295)) 4294967296) 0) (= v_main_~z~0_5 (+ v_itFin_2 v_main_~z~0_4)) (= v_main_~x~0_8 (+ v_main_~x~0_9 v_itFin_2)) (< 0 .cse0) (< (div (+ (* v_itFin_2 (- 1)) (* v_main_~z~0_5 (- 4294967295))) (- 4294967296)) (+ (div (* v_main_~z~0_5 4294967295) 4294967296) 2))))) InVars {main_#t~post10=|v_main_#t~post10_3|, main_~x~0=v_main_~x~0_9, main_#t~post11=|v_main_#t~post11_3|, main_~z~0=v_main_~z~0_5} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_8, main_#t~post11=|v_main_#t~post11_1|, main_~z~0=v_main_~z~0_4} AuxVars[v_itFin_2] AssignedVars[main_#t~post10, main_~x~0, main_~z~0, main_#t~post11] [2021-05-02 18:36:03,726 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 (mod v_main_~y~0_4 4294967296)) InVars {main_~y~0=v_main_~y~0_4} OutVars{main_~y~0=v_main_~y~0_4} AuxVars[] AssignedVars[] [2021-05-02 18:36:03,730 WARN L240 tifierPushTermWalker]: treesize reduction 8, result has 89.6 percent of original size [2021-05-02 18:36:03,851 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 18:36:03,949 WARN L245 tifierPushTermWalker]: treesize reduction 8, result has 89.6 percent of original size 69 [2021-05-02 18:36:03,992 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< 0 (mod v_main_~y~0_4 4294967296)) (= v_main_~y~0_4 (+ v_main_~y~0_3 1)) (= v_main_~x~0_3 (+ v_main_~x~0_2 1))) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_4} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_3, main_#t~post12=|v_main_#t~post12_1|, main_#t~post13=|v_main_#t~post13_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post12, main_#t~post13] with Formula: (let ((.cse0 (mod v_main_~y~0_4 4294967296))) (or (and (<= (mod (+ v_main_~y~0_4 (* v_itFin_3 4294967295)) 4294967296) 0) (< 0 v_itFin_3) (< 0 .cse0) (= v_main_~y~0_4 (+ v_itFin_3 v_main_~y~0_3)) (= v_main_~x~0_3 (+ v_itFin_3 v_main_~x~0_2)) (< (div (+ (* v_itFin_3 (- 1)) (* v_main_~y~0_4 (- 4294967295))) (- 4294967296)) (+ (div (* v_main_~y~0_4 4294967295) 4294967296) 2))) (and (= v_main_~y~0_4 v_main_~y~0_3) (= v_main_~x~0_3 v_main_~x~0_2) (= |v_main_#t~post13_3| |v_main_#t~post13_1|) (<= .cse0 0) (= |v_main_#t~post12_3| |v_main_#t~post12_1|) (= v_itFin_3 0)))) InVars {main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_3, main_#t~post12=|v_main_#t~post12_3|, main_#t~post13=|v_main_#t~post13_3|} OutVars{main_~y~0=v_main_~y~0_3, main_~x~0=v_main_~x~0_2, main_#t~post12=|v_main_#t~post12_1|, main_#t~post13=|v_main_#t~post13_1|} AuxVars[v_itFin_3] AssignedVars[main_~x~0, main_~y~0, main_#t~post12, main_#t~post13] [2021-05-02 18:36:03,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:36:03 BasicIcfg [2021-05-02 18:36:03,996 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:36:03,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:36:03,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:36:04,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:36:04,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:36:02" (1/4) ... [2021-05-02 18:36:04,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f8a4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:36:04, skipping insertion in model container [2021-05-02 18:36:04,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:36:02" (2/4) ... [2021-05-02 18:36:04,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f8a4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:36:04, skipping insertion in model container [2021-05-02 18:36:04,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:36:03" (3/4) ... [2021-05-02 18:36:04,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f8a4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:36:04, skipping insertion in model container [2021-05-02 18:36:04,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:36:03" (4/4) ... [2021-05-02 18:36:04,007 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de32.cJordan [2021-05-02 18:36:04,012 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:36:04,014 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:36:04,027 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:36:04,049 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:36:04,049 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:36:04,050 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:36:04,050 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:36:04,050 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:36:04,050 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:36:04,050 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:36:04,052 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:36:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:36:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:36:04,068 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:36:04,069 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:36:04,069 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:36:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:36:04,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1909530012, now seen corresponding path program 1 times [2021-05-02 18:36:04,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:36:04,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862301520] [2021-05-02 18:36:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:36:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:36:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:36:04,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:36:04,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862301520] [2021-05-02 18:36:04,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862301520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:36:04,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:36:04,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:36:04,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440789491] [2021-05-02 18:36:04,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:36:04,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:36:04,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:36:04,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:36:04,258 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:36:04,299 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 18:36:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:36:04,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2021-05-02 18:36:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:36:04,307 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:36:04,307 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:36:04,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:36:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:36:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 18:36:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-02 18:36:04,331 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 14 [2021-05-02 18:36:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:36:04,331 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-02 18:36:04,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-02 18:36:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:36:04,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:36:04,333 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:36:04,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:36:04,333 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:36:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:36:04,334 INFO L82 PathProgramCache]: Analyzing trace with hash -137167005, now seen corresponding path program 1 times [2021-05-02 18:36:04,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:36:04,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997577130] [2021-05-02 18:36:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:36:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:04,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:36:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:36:04,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:36:04,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997577130] [2021-05-02 18:36:04,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997577130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:36:04,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:36:04,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:36:04,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609147925] [2021-05-02 18:36:04,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:36:04,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:36:04,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:36:04,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:36:04,479 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:04,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:36:04,626 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-05-02 18:36:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:36:04,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 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 14 [2021-05-02 18:36:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:36:04,628 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:36:04,628 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 18:36:04,629 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:36:04,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 18:36:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-02 18:36:04,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-05-02 18:36:04,635 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 14 [2021-05-02 18:36:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:36:04,638 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-05-02 18:36:04,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-05-02 18:36:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:36:04,643 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:36:04,643 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:36:04,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:36:04,643 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:36:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:36:04,644 INFO L82 PathProgramCache]: Analyzing trace with hash 69510770, now seen corresponding path program 1 times [2021-05-02 18:36:04,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:36:04,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253274678] [2021-05-02 18:36:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:36:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:36:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:36:04,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:36:04,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253274678] [2021-05-02 18:36:04,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253274678] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:04,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588018105] [2021-05-02 18:36:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:36:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:04,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:36:04,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:36:04,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:04,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:36:04,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588018105] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:04,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:36:04,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-05-02 18:36:04,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014616125] [2021-05-02 18:36:04,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:36:04,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:36:04,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:36:04,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:36:04,968 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:36:05,206 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-05-02 18:36:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:36:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 18:36:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:36:05,207 INFO L225 Difference]: With dead ends: 26 [2021-05-02 18:36:05,207 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 18:36:05,208 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 245.9ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:36:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 18:36:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 18:36:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-05-02 18:36:05,210 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 15 [2021-05-02 18:36:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:36:05,210 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-05-02 18:36:05,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-05-02 18:36:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 18:36:05,211 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:36:05,211 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:36:05,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:36:05,429 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:36:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:36:05,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1435685474, now seen corresponding path program 1 times [2021-05-02 18:36:05,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:36:05,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828286089] [2021-05-02 18:36:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:36:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:36:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:36:05,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:36:05,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828286089] [2021-05-02 18:36:05,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828286089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:05,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145741830] [2021-05-02 18:36:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:36:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:05,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:36:05,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:36:05,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:05,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:05,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:36:05,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145741830] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:05,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:36:05,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-05-02 18:36:05,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421785002] [2021-05-02 18:36:05,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:36:05,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:36:05,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:36:05,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:36:05,942 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:36:06,378 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-05-02 18:36:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:36:06,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-02 18:36:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:36:06,380 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:36:06,380 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:36:06,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 524.3ms TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:36:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:36:06,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-05-02 18:36:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-05-02 18:36:06,383 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2021-05-02 18:36:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:36:06,383 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-05-02 18:36:06,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:36:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-05-02 18:36:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:36:06,384 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:36:06,384 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:36:06,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:36:06,608 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:36:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:36:06,609 INFO L82 PathProgramCache]: Analyzing trace with hash 957906802, now seen corresponding path program 1 times [2021-05-02 18:36:06,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:36:06,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836890862] [2021-05-02 18:36:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:36:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:07,711 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2021-05-02 18:36:10,469 WARN L205 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 116 DAG size of output: 64 [2021-05-02 18:36:14,245 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-05-02 18:36:19,383 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-05-02 18:36:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:36:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:36:22,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:36:22,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836890862] [2021-05-02 18:36:22,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836890862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:36:22,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023113511] [2021-05-02 18:36:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:36:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:36:22,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:36:22,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:36:22,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:22,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:22,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:36:23,001 WARN L159 QuantifierPusher]: Ignoring assumption.