/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-de31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 04:00:38,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 04:00:38,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 04:00:38,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 04:00:38,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 04:00:38,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 04:00:38,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 04:00:38,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 04:00:38,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 04:00:38,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 04:00:38,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 04:00:38,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 04:00:38,307 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 04:00:38,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 04:00:38,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 04:00:38,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 04:00:38,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 04:00:38,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 04:00:38,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 04:00:38,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 04:00:38,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 04:00:38,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 04:00:38,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 04:00:38,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 04:00:38,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 04:00:38,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 04:00:38,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 04:00:38,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 04:00:38,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 04:00:38,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 04:00:38,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 04:00:38,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 04:00:38,333 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 04:00:38,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 04:00:38,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 04:00:38,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 04:00:38,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 04:00:38,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 04:00:38,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 04:00:38,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 04:00:38,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:00:38,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 04:00:38,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 04:00:38,334 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 04:00:38,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 04:00:38,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 04:00:38,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 04:00:38,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 04:00:38,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 04:00:38,550 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 04:00:38,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de31.c [2022-03-20 04:00:38,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1beffe0c/a398edf001864e7ba0b64338fed3cea6/FLAG5f20e69aa [2022-03-20 04:00:38,930 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 04:00:38,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de31.c [2022-03-20 04:00:38,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1beffe0c/a398edf001864e7ba0b64338fed3cea6/FLAG5f20e69aa [2022-03-20 04:00:39,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1beffe0c/a398edf001864e7ba0b64338fed3cea6 [2022-03-20 04:00:39,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 04:00:39,345 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 04:00:39,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 04:00:39,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 04:00:39,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 04:00:39,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1beffc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39, skipping insertion in model container [2022-03-20 04:00:39,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 04:00:39,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 04:00:39,491 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-crafted-1/in-de31.c[368,381] [2022-03-20 04:00:39,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:00:39,510 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 04:00:39,517 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-crafted-1/in-de31.c[368,381] [2022-03-20 04:00:39,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:00:39,530 INFO L208 MainTranslator]: Completed translation [2022-03-20 04:00:39,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39 WrapperNode [2022-03-20 04:00:39,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 04:00:39,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 04:00:39,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 04:00:39,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 04:00:39,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 04:00:39,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 04:00:39,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 04:00:39,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 04:00:39,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:00:39,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:00:39,598 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) [2022-03-20 04:00:39,617 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 [2022-03-20 04:00:39,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 04:00:39,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 04:00:39,648 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 04:00:39,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 04:00:39,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 04:00:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 04:00:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 04:00:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 04:00:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 04:00:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 04:00:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 04:00:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 04:00:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 04:00:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 04:00:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 04:00:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 04:00:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 04:00:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 04:00:39,709 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 04:00:39,711 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 04:00:39,803 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 04:00:39,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 04:00:39,809 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-20 04:00:39,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:00:39 BoogieIcfgContainer [2022-03-20 04:00:39,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 04:00:39,811 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 04:00:39,811 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 04:00:39,818 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 04:00:39,821 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:00:39" (1/1) ... [2022-03-20 04:00:39,823 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 04:00:40,134 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 [2022-03-20 04:00:40,134 INFO L91 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~x~0_3 1) v_main_~x~0_4) (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (< 0 (mod v_main_~x~0_4 4294967296))) InVars {main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_6} OutVars{main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_5, 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_6 v_main_~y~0_5)) (and (forall ((v_it_1 Int)) (or (< 0 (mod (+ v_main_~x~0_4 (* v_it_1 4294967295)) 4294967296)) (not (<= 1 v_it_1)) (not (<= (+ v_main_~y~0_6 v_it_1 1) v_main_~y~0_5)))) (< v_main_~y~0_6 v_main_~y~0_5) (< 0 .cse0) (= v_main_~x~0_3 (+ v_main_~x~0_4 v_main_~y~0_6 (* (- 1) v_main_~y~0_5)))))) InVars {main_~y~0=v_main_~y~0_6, 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_5, 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] [2022-03-20 04:00:40,426 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 [2022-03-20 04:00:40,426 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~z~0_8 (+ v_main_~z~0_7 1)) (< 0 (mod v_main_~z~0_8 4294967296)) (= v_main_~x~0_5 (+ v_main_~x~0_6 1))) InVars {main_~x~0=v_main_~x~0_6, main_~z~0=v_main_~z~0_8} OutVars{main_~x~0=v_main_~x~0_5, main_~z~0=v_main_~z~0_7, main_#t~post8=|v_main_#t~post8_1|, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post8, main_#t~post7] to Formula: (let ((.cse0 (mod v_main_~z~0_8 4294967296))) (or (and (<= .cse0 0) (= v_main_~z~0_8 v_main_~z~0_7) (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= v_main_~x~0_5 v_main_~x~0_6) (= |v_main_#t~post8_3| |v_main_#t~post8_1|)) (and (= v_main_~z~0_7 (+ v_main_~x~0_6 v_main_~z~0_8 (* (- 1) v_main_~x~0_5))) (< 0 .cse0) (forall ((v_it_2 Int)) (or (< 0 (mod (+ v_main_~z~0_8 (* v_it_2 4294967295)) 4294967296)) (not (<= 1 v_it_2)) (not (<= (+ v_main_~x~0_6 v_it_2 1) v_main_~x~0_5)))) (< v_main_~x~0_6 v_main_~x~0_5)))) InVars {main_~x~0=v_main_~x~0_6, main_#t~post8=|v_main_#t~post8_3|, main_~z~0=v_main_~z~0_8, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~x~0=v_main_~x~0_5, main_#t~post8=|v_main_#t~post8_1|, main_~z~0=v_main_~z~0_7, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post8, main_#t~post7] [2022-03-20 04:00:40,507 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 [2022-03-20 04:00:40,507 INFO L91 elerationTransformer]: Accelerated Formula: (and (< 0 (mod v_main_~y~0_4 4294967296)) (= (+ v_main_~z~0_3 1) v_main_~z~0_2) (= v_main_~y~0_4 (+ v_main_~y~0_3 1))) InVars {main_~z~0=v_main_~z~0_3, main_~y~0=v_main_~y~0_4} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~z~0=v_main_~z~0_2, main_~y~0=v_main_~y~0_3, main_#t~post9=|v_main_#t~post9_1|} AuxVars[] AssignedVars[main_#t~post10, main_~z~0, main_~y~0, main_#t~post9] to Formula: (let ((.cse0 (mod v_main_~y~0_4 4294967296))) (or (and (= (+ (* (- 1) v_main_~y~0_3) v_main_~y~0_4 v_main_~z~0_3) v_main_~z~0_2) (< 0 .cse0) (forall ((v_it_3 Int)) (or (not (<= 1 v_it_3)) (< 0 (mod (+ v_main_~y~0_4 (* v_it_3 4294967295)) 4294967296)) (not (<= (+ v_main_~y~0_3 v_it_3 1) v_main_~y~0_4)))) (< v_main_~y~0_3 v_main_~y~0_4)) (and (= |v_main_#t~post10_3| |v_main_#t~post10_1|) (= v_main_~z~0_3 v_main_~z~0_2) (= v_main_~y~0_4 v_main_~y~0_3) (<= .cse0 0) (= |v_main_#t~post9_3| |v_main_#t~post9_1|)))) InVars {main_~y~0=v_main_~y~0_4, main_#t~post10=|v_main_#t~post10_3|, main_#t~post9=|v_main_#t~post9_3|, main_~z~0=v_main_~z~0_3} OutVars{main_~y~0=v_main_~y~0_3, main_#t~post10=|v_main_#t~post10_1|, main_#t~post9=|v_main_#t~post9_1|, main_~z~0=v_main_~z~0_2} AuxVars[] AssignedVars[main_#t~post10, main_~z~0, main_~y~0, main_#t~post9] [2022-03-20 04:00:40,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:00:40 BasicIcfg [2022-03-20 04:00:40,511 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 04:00:40,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 04:00:40,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 04:00:40,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 04:00:40,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 04:00:39" (1/4) ... [2022-03-20 04:00:40,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560dd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:00:40, skipping insertion in model container [2022-03-20 04:00:40,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:00:39" (2/4) ... [2022-03-20 04:00:40,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560dd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:00:40, skipping insertion in model container [2022-03-20 04:00:40,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:00:39" (3/4) ... [2022-03-20 04:00:40,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560dd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 04:00:40, skipping insertion in model container [2022-03-20 04:00:40,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:00:40" (4/4) ... [2022-03-20 04:00:40,518 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de31.cJordan [2022-03-20 04:00:40,521 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 04:00:40,521 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 04:00:40,549 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 04:00:40,553 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 [2022-03-20 04:00:40,553 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 04:00:40,561 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) [2022-03-20 04:00:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 04:00:40,566 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:00:40,566 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:00:40,567 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:00:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:00:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1909530012, now seen corresponding path program 1 times [2022-03-20 04:00:40,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:00:40,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817486943] [2022-03-20 04:00:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:00:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:00:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:40,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:00:40,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817486943] [2022-03-20 04:00:40,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817486943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:00:40,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:00:40,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 04:00:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956215063] [2022-03-20 04:00:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:00:40,700 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 04:00:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:00:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 04:00:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 04:00:40,725 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) [2022-03-20 04:00:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:00:40,749 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-03-20 04:00:40,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 04:00:40,753 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 [2022-03-20 04:00:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:00:40,757 INFO L225 Difference]: With dead ends: 22 [2022-03-20 04:00:40,757 INFO L226 Difference]: Without dead ends: 15 [2022-03-20 04:00:40,758 INFO L912 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 [2022-03-20 04:00:40,763 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 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 [2022-03-20 04:00:40,763 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:00:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-20 04:00:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-20 04:00:40,790 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) [2022-03-20 04:00:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-03-20 04:00:40,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 14 [2022-03-20 04:00:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:00:40,791 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-03-20 04:00:40,791 INFO L479 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) [2022-03-20 04:00:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-03-20 04:00:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 04:00:40,792 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:00:40,792 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:00:40,792 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 04:00:40,793 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:00:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:00:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -137167005, now seen corresponding path program 1 times [2022-03-20 04:00:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:00:40,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837184745] [2022-03-20 04:00:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:40,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:00:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:00:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:00:41,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837184745] [2022-03-20 04:00:41,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837184745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:00:41,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:00:41,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 04:00:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821884779] [2022-03-20 04:00:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:00:41,019 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 04:00:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:00:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 04:00:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-20 04:00:41,020 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 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) [2022-03-20 04:00:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:00:41,141 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-03-20 04:00:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 04:00:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 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 [2022-03-20 04:00:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:00:41,143 INFO L225 Difference]: With dead ends: 24 [2022-03-20 04:00:41,143 INFO L226 Difference]: Without dead ends: 21 [2022-03-20 04:00:41,146 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-20 04:00:41,147 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:00:41,148 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-03-20 04:00:41,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-03-20 04:00:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-03-20 04:00:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-03-20 04:00:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-03-20 04:00:41,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2022-03-20 04:00:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:00:41,163 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-03-20 04:00:41,163 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 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) [2022-03-20 04:00:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-03-20 04:00:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 04:00:41,165 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:00:41,165 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:00:41,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 04:00:41,165 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:00:41,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:00:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash 69510770, now seen corresponding path program 1 times [2022-03-20 04:00:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:00:41,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689936949] [2022-03-20 04:00:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:00:41,175 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.0))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-03-20 04:00:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:41,206 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.2))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-03-20 04:00:41,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:00:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:00:41,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689936949] [2022-03-20 04:00:41,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689936949] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:00:41,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820190662] [2022-03-20 04:00:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:00:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:00:41,355 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) [2022-03-20 04:00:41,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 04:00:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:41,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 04:00:41,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:00:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:41,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:00:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:45,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820190662] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:00:45,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 04:00:45,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 17 [2022-03-20 04:00:45,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326825621] [2022-03-20 04:00:45,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 04:00:45,323 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 04:00:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:00:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 04:00:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=217, Unknown=3, NotChecked=0, Total=272 [2022-03-20 04:00:45,323 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 14 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:00:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:00:45,469 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-03-20 04:00:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 04:00:45,469 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 14 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-20 04:00:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:00:45,470 INFO L225 Difference]: With dead ends: 25 [2022-03-20 04:00:45,470 INFO L226 Difference]: Without dead ends: 22 [2022-03-20 04:00:45,470 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=103, Invalid=400, Unknown=3, NotChecked=0, Total=506 [2022-03-20 04:00:45,471 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:00:45,471 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 57 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-03-20 04:00:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-20 04:00:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-03-20 04:00:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-03-20 04:00:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-03-20 04:00:45,474 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2022-03-20 04:00:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:00:45,474 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-03-20 04:00:45,474 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 14 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:00:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-03-20 04:00:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 04:00:45,475 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:00:45,475 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:00:45,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 04:00:45,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:00:45,683 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:00:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:00:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 842497847, now seen corresponding path program 1 times [2022-03-20 04:00:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:00:45,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415739544] [2022-03-20 04:00:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:45,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:00:45,691 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.0))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-03-20 04:00:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:45,722 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.1))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-03-20 04:00:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:00:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:45,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:00:45,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415739544] [2022-03-20 04:00:45,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415739544] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:00:45,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203905599] [2022-03-20 04:00:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:45,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:00:45,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:00:45,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:00:45,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 04:00:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:45,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 04:00:45,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:00:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 04:00:46,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 04:00:46,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203905599] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:00:46,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 04:00:46,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-03-20 04:00:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156005382] [2022-03-20 04:00:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:00:46,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 04:00:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:00:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 04:00:46,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-20 04:00:46,023 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:00:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:00:46,068 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-03-20 04:00:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 04:00:46,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-20 04:00:46,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:00:46,071 INFO L225 Difference]: With dead ends: 25 [2022-03-20 04:00:46,071 INFO L226 Difference]: Without dead ends: 22 [2022-03-20 04:00:46,071 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-20 04:00:46,073 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:00:46,074 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-03-20 04:00:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-20 04:00:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-03-20 04:00:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-03-20 04:00:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-03-20 04:00:46,079 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 15 [2022-03-20 04:00:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:00:46,079 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-03-20 04:00:46,079 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:00:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-03-20 04:00:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 04:00:46,083 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:00:46,083 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:00:46,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 04:00:46,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 04:00:46,300 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:00:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:00:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1476846263, now seen corresponding path program 1 times [2022-03-20 04:00:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:00:46,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202411500] [2022-03-20 04:00:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:00:46,308 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)) [2022-03-20 04:00:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:46,324 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)) [2022-03-20 04:00:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:00:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:46,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:00:46,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202411500] [2022-03-20 04:00:46,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202411500] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:00:46,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6474254] [2022-03-20 04:00:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:00:46,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:00:46,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:00:46,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:00:46,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 04:00:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:00:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 04:00:46,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:00:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:47,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:00:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:00:50,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6474254] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:00:50,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 04:00:50,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2022-03-20 04:00:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490625851] [2022-03-20 04:00:50,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 04:00:50,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 04:00:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:00:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 04:00:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=276, Unknown=1, NotChecked=0, Total=342 [2022-03-20 04:00:50,986 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 16 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:01:00,322 WARN L232 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:01:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:01:00,534 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2022-03-20 04:01:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 04:01:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 16 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-20 04:01:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:01:00,535 INFO L225 Difference]: With dead ends: 36 [2022-03-20 04:01:00,535 INFO L226 Difference]: Without dead ends: 32 [2022-03-20 04:01:00,535 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=172, Invalid=638, Unknown=2, NotChecked=0, Total=812 [2022-03-20 04:01:00,536 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:01:00,536 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 85 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2022-03-20 04:01:00,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-20 04:01:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2022-03-20 04:01:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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) [2022-03-20 04:01:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-03-20 04:01:00,538 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 15 [2022-03-20 04:01:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:01:00,538 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-03-20 04:01:00,538 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 16 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:01:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-03-20 04:01:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 04:01:00,539 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:01:00,539 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:01:00,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 04:01:00,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:01:00,748 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:01:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:01:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2113412797, now seen corresponding path program 2 times [2022-03-20 04:01:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:01:00,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905483110] [2022-03-20 04:01:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:01:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:01:00,753 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.0))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:00,754 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.1))) (+ main_~y~0_9 .cse0 (* (- 4294967296) (div (+ main_~y~0_9 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:01:00,784 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.3))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:00,787 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.4))) (+ main_~y~0_9 .cse0 (* (- 4294967296) (div (+ main_~y~0_9 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:01:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:01:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 04:01:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:01:00,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905483110] [2022-03-20 04:01:00,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905483110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:01:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379175520] [2022-03-20 04:01:00,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 04:01:00,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:01:00,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:01:00,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:01:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 04:01:00,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 04:01:00,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:01:00,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 04:01:00,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:01:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 04:01:01,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:01:04,639 WARN L833 $PredicateComparison]: unable to prove that (forall ((aux_mod_v_main_~z~0_18_31 Int)) (or (= aux_mod_v_main_~z~0_18_31 (mod c_main_~n~0 4294967296)) (let ((.cse1 (< 0 (mod c_main_~y~0 4294967296)))) (and (or (forall ((v_main_~z~0_19 Int)) (or (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) c_main_~y~0) 4294967296))) (<= 1 v_it_3) (<= (+ v_it_3 c_main_~z~0 1) v_main_~z~0_19))) (let ((.cse0 (< 0 (mod (+ (* v_main_~z~0_19 4294967295) c_main_~y~0 c_main_~z~0) 4294967296)))) (and (or (forall ((aux_div_v_main_~z~0_18_31 Int)) (not (= v_main_~z~0_19 (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31)))) .cse0) (or (forall ((aux_div_v_main_~z~0_18_31 Int)) (or (not (< v_main_~z~0_19 (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31))) (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) (* v_main_~z~0_19 4294967295) c_main_~y~0 c_main_~z~0) 4294967296))) (<= 1 v_it_3) (<= (+ v_main_~z~0_19 v_it_3 1) (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31)))))) (not .cse0)))) (not (< c_main_~z~0 v_main_~z~0_19)))) (not .cse1)) (or (forall ((aux_div_v_main_~z~0_18_31 Int)) (not (= (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31) c_main_~z~0))) .cse1))) (> 0 aux_mod_v_main_~z~0_18_31) (>= aux_mod_v_main_~z~0_18_31 4294967296))) is different from false [2022-03-20 04:01:07,734 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((aux_mod_v_main_~z~0_18_31 Int)) (or (= aux_mod_v_main_~z~0_18_31 (mod c_main_~n~0 4294967296)) (let ((.cse1 (< 0 (mod c_main_~y~0 4294967296)))) (and (or (forall ((v_main_~z~0_19 Int)) (or (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) c_main_~y~0) 4294967296))) (<= 1 v_it_3) (<= (+ v_it_3 c_main_~z~0 1) v_main_~z~0_19))) (let ((.cse0 (< 0 (mod (+ (* v_main_~z~0_19 4294967295) c_main_~y~0 c_main_~z~0) 4294967296)))) (and (or (forall ((aux_div_v_main_~z~0_18_31 Int)) (not (= v_main_~z~0_19 (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31)))) .cse0) (or (forall ((aux_div_v_main_~z~0_18_31 Int)) (or (not (< v_main_~z~0_19 (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31))) (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) (* v_main_~z~0_19 4294967295) c_main_~y~0 c_main_~z~0) 4294967296))) (<= 1 v_it_3) (<= (+ v_main_~z~0_19 v_it_3 1) (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31)))))) (not .cse0)))) (not (< c_main_~z~0 v_main_~z~0_19)))) (not .cse1)) (or (forall ((aux_div_v_main_~z~0_18_31 Int)) (not (= (+ (* 4294967296 aux_div_v_main_~z~0_18_31) aux_mod_v_main_~z~0_18_31) c_main_~z~0))) .cse1))) (> 0 aux_mod_v_main_~z~0_18_31) (>= aux_mod_v_main_~z~0_18_31 4294967296))) (< 0 (mod c_main_~z~0 4294967296))) is different from true [2022-03-20 04:01:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-03-20 04:01:08,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379175520] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:01:08,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 04:01:08,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 18 [2022-03-20 04:01:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877910386] [2022-03-20 04:01:08,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 04:01:08,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 04:01:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:01:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 04:01:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=194, Unknown=3, NotChecked=58, Total=306 [2022-03-20 04:01:08,305 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 15 states have internal predecessors, (24), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:01:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:01:08,445 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-03-20 04:01:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 04:01:08,446 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 15 states have internal predecessors, (24), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-20 04:01:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:01:08,446 INFO L225 Difference]: With dead ends: 32 [2022-03-20 04:01:08,446 INFO L226 Difference]: Without dead ends: 26 [2022-03-20 04:01:08,446 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=103, Invalid=364, Unknown=3, NotChecked=82, Total=552 [2022-03-20 04:01:08,447 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:01:08,447 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 55 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 46 Unchecked, 0.0s Time] [2022-03-20 04:01:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-20 04:01:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-03-20 04:01:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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) [2022-03-20 04:01:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-03-20 04:01:08,449 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2022-03-20 04:01:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:01:08,449 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-03-20 04:01:08,449 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 15 states have internal predecessors, (24), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 04:01:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-03-20 04:01:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 04:01:08,450 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:01:08,450 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:01:08,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-20 04:01:08,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:01:08,655 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:01:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:01:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash 374350110, now seen corresponding path program 1 times [2022-03-20 04:01:08,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:01:08,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071103445] [2022-03-20 04:01:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:01:08,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:01:08,668 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.0))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:08,668 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.1))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:01:08,696 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.3))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:08,704 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.4))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-03-20 04:01:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:01:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:01:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 04:01:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:01:08,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071103445] [2022-03-20 04:01:08,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071103445] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:01:08,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678489254] [2022-03-20 04:01:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:01:08,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:01:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:01:08,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:01:08,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process