/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-de42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 15:21:33,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 15:21:33,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 15:21:33,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 15:21:33,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 15:21:33,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 15:21:33,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 15:21:33,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 15:21:33,416 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 15:21:33,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 15:21:33,417 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 15:21:33,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 15:21:33,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 15:21:33,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 15:21:33,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 15:21:33,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 15:21:33,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:21:33,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 15:21:33,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 15:21:33,418 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 15:21:33,418 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 15:21:33,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 15:21:33,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 15:21:33,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 15:21:33,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 15:21:33,608 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 15:21:33,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de42.c [2022-03-17 15:21:33,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baea6cd9/11478bdb6b394cefac0c8a13c1e23482/FLAG854c62966 [2022-03-17 15:21:33,999 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 15:21:33,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de42.c [2022-03-17 15:21:34,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baea6cd9/11478bdb6b394cefac0c8a13c1e23482/FLAG854c62966 [2022-03-17 15:21:34,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baea6cd9/11478bdb6b394cefac0c8a13c1e23482 [2022-03-17 15:21:34,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 15:21:34,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 15:21:34,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 15:21:34,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 15:21:34,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 15:21:34,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a6a4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34, skipping insertion in model container [2022-03-17 15:21:34,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 15:21:34,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 15:21:34,134 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-de42.c[368,381] [2022-03-17 15:21:34,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:21:34,173 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 15:21:34,180 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-de42.c[368,381] [2022-03-17 15:21:34,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:21:34,190 INFO L208 MainTranslator]: Completed translation [2022-03-17 15:21:34,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34 WrapperNode [2022-03-17 15:21:34,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 15:21:34,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 15:21:34,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 15:21:34,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 15:21:34,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 15:21:34,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 15:21:34,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 15:21:34,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 15:21:34,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:21:34,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:21:34,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 15:21:34,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 15:21:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 15:21:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 15:21:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 15:21:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 15:21:34,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 15:21:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 15:21:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 15:21:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 15:21:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 15:21:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-17 15:21:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 15:21:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 15:21:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 15:21:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 15:21:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 15:21:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 15:21:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 15:21:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 15:21:34,322 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 15:21:34,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 15:21:34,424 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 15:21:34,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 15:21:34,439 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-17 15:21:34,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:21:34 BoogieIcfgContainer [2022-03-17 15:21:34,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 15:21:34,441 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 15:21:34,442 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 15:21:34,443 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 15:21:34,446 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:21:34" (1/1) ... [2022-03-17 15:21:34,599 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-17 15:21:34,600 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] [2022-03-17 15:21:34,693 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-17 15:21:34,694 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~z~0_10 (+ v_main_~z~0_9 1)) (= v_main_~x~0_8 (+ v_main_~x~0_9 1)) (< 0 (mod v_main_~z~0_10 4294967296))) InVars {main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_10} OutVars{main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_9, 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_10 4294967296))) (or (and (= v_main_~x~0_9 v_main_~x~0_8) (<= .cse0 0) (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= v_main_~z~0_10 v_main_~z~0_9) (= |v_main_#t~post8_3| |v_main_#t~post8_1|)) (and (= v_main_~z~0_9 (+ (* (- 1) v_main_~x~0_8) v_main_~z~0_10 v_main_~x~0_9)) (< v_main_~x~0_9 v_main_~x~0_8) (< 0 .cse0) (forall ((v_it_2 Int)) (or (not (<= 1 v_it_2)) (not (<= (+ v_main_~x~0_9 v_it_2 1) v_main_~x~0_8)) (< 0 (mod (+ v_main_~z~0_10 (* v_it_2 4294967295)) 4294967296))))))) InVars {main_~x~0=v_main_~x~0_9, main_#t~post8=|v_main_#t~post8_3|, main_~z~0=v_main_~z~0_10, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~x~0=v_main_~x~0_8, main_#t~post8=|v_main_#t~post8_1|, main_~z~0=v_main_~z~0_9, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post8, main_#t~post7] [2022-03-17 15:21:36,785 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-17 15:21:36,786 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] [2022-03-17 15:21:36,860 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-17 15:21:36,860 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~z~0_4 (+ v_main_~z~0_5 1)) (= v_main_~x~0_7 (+ v_main_~x~0_6 1)) (< 0 (mod v_main_~x~0_7 4294967296))) InVars {main_~x~0=v_main_~x~0_7, main_~z~0=v_main_~z~0_5} OutVars{main_~x~0=v_main_~x~0_6, main_~z~0=v_main_~z~0_4, main_#t~post11=|v_main_#t~post11_1|, main_#t~post12=|v_main_#t~post12_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post11, main_#t~post12] to Formula: (let ((.cse0 (mod v_main_~x~0_7 4294967296))) (or (and (= |v_main_#t~post12_3| |v_main_#t~post12_1|) (= |v_main_#t~post11_3| |v_main_#t~post11_1|) (<= .cse0 0) (= v_main_~z~0_5 v_main_~z~0_4) (= v_main_~x~0_7 v_main_~x~0_6)) (and (forall ((v_it_4 Int)) (or (not (<= (+ v_main_~x~0_6 v_it_4 1) v_main_~x~0_7)) (< 0 (mod (+ (* v_it_4 4294967295) v_main_~x~0_7) 4294967296)) (not (<= 1 v_it_4)))) (< 0 .cse0) (< v_main_~x~0_6 v_main_~x~0_7) (= v_main_~z~0_4 (+ (* (- 1) v_main_~x~0_6) v_main_~x~0_7 v_main_~z~0_5))))) InVars {main_~x~0=v_main_~x~0_7, main_#t~post11=|v_main_#t~post11_3|, main_#t~post12=|v_main_#t~post12_3|, main_~z~0=v_main_~z~0_5} OutVars{main_~x~0=v_main_~x~0_6, main_#t~post11=|v_main_#t~post11_1|, main_#t~post12=|v_main_#t~post12_1|, main_~z~0=v_main_~z~0_4} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post11, main_#t~post12] [2022-03-17 15:21:36,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:21:36 BasicIcfg [2022-03-17 15:21:36,863 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 15:21:36,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 15:21:36,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 15:21:36,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 15:21:36,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:21:34" (1/4) ... [2022-03-17 15:21:36,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dda9a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:21:36, skipping insertion in model container [2022-03-17 15:21:36,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:21:34" (2/4) ... [2022-03-17 15:21:36,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dda9a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:21:36, skipping insertion in model container [2022-03-17 15:21:36,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:21:34" (3/4) ... [2022-03-17 15:21:36,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dda9a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:21:36, skipping insertion in model container [2022-03-17 15:21:36,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:21:36" (4/4) ... [2022-03-17 15:21:36,869 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de42.cJordan [2022-03-17 15:21:36,872 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 15:21:36,872 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 15:21:36,897 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 15:21:36,902 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 15:21:36,902 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 15:21:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-17 15:21:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-17 15:21:36,913 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:21:36,914 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:21:36,914 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:21:36,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:21:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2015447748, now seen corresponding path program 1 times [2022-03-17 15:21:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:21:36,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795497281] [2022-03-17 15:21:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:36,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:21:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:21:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:37,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:21:37,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795497281] [2022-03-17 15:21:37,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795497281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:21:37,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:21:37,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 15:21:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606896661] [2022-03-17 15:21:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:21:37,023 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 15:21:37,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:21:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 15:21:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:21:37,044 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:21:37,068 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-03-17 15:21:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 15:21:37,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 15 [2022-03-17 15:21:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:21:37,083 INFO L225 Difference]: With dead ends: 23 [2022-03-17 15:21:37,083 INFO L226 Difference]: Without dead ends: 16 [2022-03-17 15:21:37,084 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:21:37,088 INFO L912 BasicCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:21:37,090 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:21:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-17 15:21:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-17 15:21:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-03-17 15:21:37,112 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 15 [2022-03-17 15:21:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:21:37,113 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-03-17 15:21:37,113 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-03-17 15:21:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-17 15:21:37,113 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:21:37,113 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:21:37,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 15:21:37,114 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:21:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:21:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1389121438, now seen corresponding path program 1 times [2022-03-17 15:21:37,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:21:37,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229501336] [2022-03-17 15:21:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:37,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:21:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:21:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:37,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:21:37,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229501336] [2022-03-17 15:21:37,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229501336] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:21:37,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:21:37,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 15:21:37,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780919110] [2022-03-17 15:21:37,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:21:37,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 15:21:37,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:21:37,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 15:21:37,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-17 15:21:37,439 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:21:37,596 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-03-17 15:21:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 15:21:37,596 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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 15 [2022-03-17 15:21:37,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:21:37,597 INFO L225 Difference]: With dead ends: 27 [2022-03-17 15:21:37,597 INFO L226 Difference]: Without dead ends: 24 [2022-03-17 15:21:37,598 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-03-17 15:21:37,598 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:21:37,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 51 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 4 Unchecked, 0.1s Time] [2022-03-17 15:21:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-17 15:21:37,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-03-17 15:21:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-03-17 15:21:37,602 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 15 [2022-03-17 15:21:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:21:37,602 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-03-17 15:21:37,602 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-03-17 15:21:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-17 15:21:37,602 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:21:37,603 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:21:37,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 15:21:37,603 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:21:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:21:37,603 INFO L85 PathProgramCache]: Analyzing trace with hash 139812261, now seen corresponding path program 1 times [2022-03-17 15:21:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:21:37,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911385558] [2022-03-17 15:21:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:21:37,618 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.0))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-03-17 15:21:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:37,638 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.1))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-03-17 15:21:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:21:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:37,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:21:37,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911385558] [2022-03-17 15:21:37,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911385558] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:21:37,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661927528] [2022-03-17 15:21:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:37,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:21:37,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:21:37,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:21:37,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 15:21:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 15:21:37,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:21:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 15:21:38,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 15:21:38,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661927528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:21:38,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 15:21:38,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-03-17 15:21:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745961938] [2022-03-17 15:21:38,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:21:38,098 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 15:21:38,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:21:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 15:21:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-17 15:21:38,100 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-03-17 15:21:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:21:38,143 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-03-17 15:21:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 15:21:38,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 16 [2022-03-17 15:21:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:21:38,144 INFO L225 Difference]: With dead ends: 25 [2022-03-17 15:21:38,144 INFO L226 Difference]: Without dead ends: 20 [2022-03-17 15:21:38,145 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-17 15:21:38,145 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:21:38,146 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-03-17 15:21:38,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-17 15:21:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-03-17 15:21:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-03-17 15:21:38,148 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 16 [2022-03-17 15:21:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:21:38,148 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-03-17 15:21:38,148 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-03-17 15:21:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-03-17 15:21:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-17 15:21:38,149 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:21:38,149 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:21:38,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-17 15:21:38,363 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 [2022-03-17 15:21:38,363 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:21:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:21:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 912799338, now seen corresponding path program 1 times [2022-03-17 15:21:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:21:38,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304241393] [2022-03-17 15:21:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:21:38,378 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)) [2022-03-17 15:21:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:38,421 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)) [2022-03-17 15:21:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:21:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:21:38,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304241393] [2022-03-17 15:21:38,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304241393] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:21:38,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031860741] [2022-03-17 15:21:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:38,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:21:38,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:21:38,577 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) [2022-03-17 15:21:38,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 15:21:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:38,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-17 15:21:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:21:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:38,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:21:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:45,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031860741] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:21:45,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:21:45,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 20 [2022-03-17 15:21:45,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698930682] [2022-03-17 15:21:45,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:21:45,766 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 15:21:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:21:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 15:21:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=299, Unknown=3, NotChecked=0, Total=380 [2022-03-17 15:21:45,767 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 17 states have internal predecessors, (28), 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) [2022-03-17 15:21:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:21:46,115 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2022-03-17 15:21:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 15:21:46,116 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 17 states have internal predecessors, (28), 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 [2022-03-17 15:21:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:21:46,116 INFO L225 Difference]: With dead ends: 28 [2022-03-17 15:21:46,116 INFO L226 Difference]: Without dead ends: 25 [2022-03-17 15:21:46,117 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=145, Invalid=554, Unknown=3, NotChecked=0, Total=702 [2022-03-17 15:21:46,117 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:21:46,117 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 48 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-03-17 15:21:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-17 15:21:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-03-17 15:21:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-03-17 15:21:46,120 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 16 [2022-03-17 15:21:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:21:46,120 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-03-17 15:21:46,120 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 17 states have internal predecessors, (28), 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) [2022-03-17 15:21:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-03-17 15:21:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-17 15:21:46,121 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:21:46,121 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:21:46,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 15:21:46,327 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 [2022-03-17 15:21:46,328 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:21:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:21:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -894405051, now seen corresponding path program 1 times [2022-03-17 15:21:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:21:46,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359491302] [2022-03-17 15:21:46,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:46,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:21:46,345 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)) [2022-03-17 15:21:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:46,375 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)) [2022-03-17 15:21:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:21:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:21:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359491302] [2022-03-17 15:21:46,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359491302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:21:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214865433] [2022-03-17 15:21:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:46,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:21:46,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:21:46,505 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) [2022-03-17 15:21:46,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 15:21:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:46,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 15:21:46,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:21:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 15:21:46,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 15:21:46,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214865433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:21:46,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 15:21:46,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-03-17 15:21:46,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521750665] [2022-03-17 15:21:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:21:46,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 15:21:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:21:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 15:21:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-17 15:21:46,652 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-03-17 15:21:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:21:46,689 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-03-17 15:21:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 15:21:46,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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 16 [2022-03-17 15:21:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:21:46,692 INFO L225 Difference]: With dead ends: 28 [2022-03-17 15:21:46,692 INFO L226 Difference]: Without dead ends: 25 [2022-03-17 15:21:46,692 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-03-17 15:21:46,694 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:21:46,694 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-03-17 15:21:46,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-17 15:21:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-03-17 15:21:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-03-17 15:21:46,701 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 16 [2022-03-17 15:21:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:21:46,701 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-03-17 15:21:46,701 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-03-17 15:21:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-03-17 15:21:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-17 15:21:46,702 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:21:46,702 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:21:46,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-17 15:21:46,919 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 [2022-03-17 15:21:46,919 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:21:46,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:21:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1590526661, now seen corresponding path program 1 times [2022-03-17 15:21:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:21:46,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606396816] [2022-03-17 15:21:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:21:46,927 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-03-17 15:21:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:46,954 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-03-17 15:21:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:21:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:21:47,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606396816] [2022-03-17 15:21:47,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606396816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:21:47,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218530926] [2022-03-17 15:21:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:47,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:21:47,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:21:47,091 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) [2022-03-17 15:21:47,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 15:21:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:47,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-17 15:21:47,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:21:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:48,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:21:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:51,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218530926] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:21:51,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:21:51,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2022-03-17 15:21:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489791082] [2022-03-17 15:21:51,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:21:51,112 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 15:21:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:21:51,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 15:21:51,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=265, Unknown=1, NotChecked=0, Total=342 [2022-03-17 15:21:51,113 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 16 states have internal predecessors, (26), 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) [2022-03-17 15:21:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:21:51,260 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2022-03-17 15:21:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 15:21:51,260 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 16 states have internal predecessors, (26), 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 16 [2022-03-17 15:21:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:21:51,261 INFO L225 Difference]: With dead ends: 34 [2022-03-17 15:21:51,261 INFO L226 Difference]: Without dead ends: 31 [2022-03-17 15:21:51,261 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=132, Invalid=467, Unknown=1, NotChecked=0, Total=600 [2022-03-17 15:21:51,261 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:21:51,262 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 66 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-03-17 15:21:51,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-17 15:21:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-03-17 15:21:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:21:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-03-17 15:21:51,264 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 16 [2022-03-17 15:21:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:21:51,264 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-03-17 15:21:51,264 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 16 states have internal predecessors, (26), 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) [2022-03-17 15:21:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2022-03-17 15:21:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 15:21:51,264 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:21:51,264 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:21:51,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-17 15:21:51,465 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 [2022-03-17 15:21:51,465 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:21:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:21:51,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1741270951, now seen corresponding path program 1 times [2022-03-17 15:21:51,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:21:51,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477067167] [2022-03-17 15:21:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:51,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:21:51,470 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)) [2022-03-17 15:21:51,471 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.1))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-03-17 15:21:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:51,481 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)) [2022-03-17 15:21:51,483 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.3))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-03-17 15:21:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:21:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:21:51,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:21:51,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477067167] [2022-03-17 15:21:51,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477067167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:21:51,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676655845] [2022-03-17 15:21:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:21:51,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:21:51,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:21:51,592 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) [2022-03-17 15:21:51,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-17 15:21:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:21:51,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-17 15:21:51,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:21:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 15:21:51,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:21:56,377 WARN L833 $PredicateComparison]: unable to prove that (forall ((aux_mod_v_main_~z~0_21_31 Int) (v_main_~z~0_22 Int)) (or (<= 4294967296 aux_mod_v_main_~z~0_21_31) (< aux_mod_v_main_~z~0_21_31 0) (let ((.cse0 (< 0 (mod c_main_~y~0 4294967296)))) (and (or .cse0 (not (= v_main_~z~0_22 c_main_~z~0))) (or (not (< c_main_~z~0 v_main_~z~0_22)) (not .cse0) (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_22)))))) (= aux_mod_v_main_~z~0_21_31 (mod (* 2 c_main_~n~0) 4294967296)) (let ((.cse4 (< 0 (mod c_main_~x~0 4294967296)))) (and (or (forall ((aux_div_v_main_~x~0_16_31 Int) (aux_div_v_main_~z~0_21_31 Int)) (let ((.cse3 (* 4294967296 aux_div_v_main_~z~0_21_31))) (let ((.cse2 (+ v_main_~z~0_22 c_main_~x~0)) (.cse1 (+ aux_mod_v_main_~z~0_21_31 (* aux_div_v_main_~x~0_16_31 4294967296) .cse3))) (or (< .cse1 .cse2) (< .cse2 .cse1) (not (< v_main_~z~0_22 (+ aux_mod_v_main_~z~0_21_31 .cse3))) (exists ((v_it_4 Int)) (and (not (< 0 (mod (+ (* v_it_4 4294967295) c_main_~x~0) 4294967296))) (<= (+ v_main_~z~0_22 v_it_4 1) (+ aux_mod_v_main_~z~0_21_31 (* 4294967296 aux_div_v_main_~z~0_21_31))) (<= 1 v_it_4))))))) (not .cse4)) (or .cse4 (forall ((aux_div_v_main_~z~0_21_31 Int)) (not (= v_main_~z~0_22 (+ aux_mod_v_main_~z~0_21_31 (* 4294967296 aux_div_v_main_~z~0_21_31)))))))))) is different from false [2022-03-17 15:22:08,537 WARN L232 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:22:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-17 15:22:10,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676655845] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:22:10,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:22:10,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 20 [2022-03-17 15:22:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734537871] [2022-03-17 15:22:10,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:22:10,155 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 15:22:10,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:22:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 15:22:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=273, Unknown=2, NotChecked=34, Total=380 [2022-03-17 15:22:10,156 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 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) [2022-03-17 15:22:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:22:11,115 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2022-03-17 15:22:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 15:22:11,115 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 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 17 [2022-03-17 15:22:11,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:22:11,116 INFO L225 Difference]: With dead ends: 35 [2022-03-17 15:22:11,116 INFO L226 Difference]: Without dead ends: 30 [2022-03-17 15:22:11,116 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=127, Invalid=475, Unknown=2, NotChecked=46, Total=650 [2022-03-17 15:22:11,117 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:22:11,117 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 59 Unchecked, 0.1s Time] [2022-03-17 15:22:11,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-17 15:22:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-03-17 15:22:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:22:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-03-17 15:22:11,119 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 17 [2022-03-17 15:22:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:22:11,119 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-03-17 15:22:11,119 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 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) [2022-03-17 15:22:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-03-17 15:22:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 15:22:11,120 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:22:11,120 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:22:11,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-17 15:22:11,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:22:11,336 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:22:11,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:22:11,336 INFO L85 PathProgramCache]: Analyzing trace with hash -968283874, now seen corresponding path program 2 times [2022-03-17 15:22:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:22:11,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005770486] [2022-03-17 15:22:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:22:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:22:11,340 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)) [2022-03-17 15:22:11,340 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)) [2022-03-17 15:22:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:22:11,352 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)) [2022-03-17 15:22:11,355 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.3))) (+ main_~y~0_9 .cse0 (* (- 4294967296) (div (+ main_~y~0_9 .cse0) 4294967296)))) 0)) [2022-03-17 15:22:11,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:22:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:22:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 15:22:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:22:11,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005770486] [2022-03-17 15:22:11,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005770486] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:22:11,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687447704] [2022-03-17 15:22:11,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 15:22:11,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:22:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:22:11,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:22:11,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-17 15:22:11,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 15:22:11,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 15:22:11,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-17 15:22:11,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:22:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 15:22:11,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:22:49,224 WARN L855 $PredicateComparison]: unable to prove that (or (< 0 (mod c_main_~z~0 4294967296)) (forall ((aux_mod_v_main_~z~0_27_31 Int)) (or (let ((.cse0 (< 0 (mod c_main_~y~0 4294967296)))) (and (or (not .cse0) (forall ((v_main_~z~0_28 Int)) (or (not (< c_main_~z~0 v_main_~z~0_28)) (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) c_main_~y~0) 4294967296))) (<= (+ v_it_3 c_main_~z~0 1) v_main_~z~0_28) (<= 1 v_it_3))) (let ((.cse1 (< 0 (mod (+ c_main_~y~0 c_main_~z~0 (* v_main_~z~0_28 4294967295)) 4294967296)))) (and (or (forall ((aux_div_v_main_~z~0_27_31 Int)) (or (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) c_main_~y~0 c_main_~z~0 (* v_main_~z~0_28 4294967295)) 4294967296))) (<= 1 v_it_3) (<= (+ v_main_~z~0_28 v_it_3 1) (+ aux_mod_v_main_~z~0_27_31 (* 4294967296 aux_div_v_main_~z~0_27_31))))) (not (< v_main_~z~0_28 (+ aux_mod_v_main_~z~0_27_31 (* 4294967296 aux_div_v_main_~z~0_27_31)))))) (not .cse1)) (or (forall ((aux_div_v_main_~z~0_27_31 Int)) (not (= v_main_~z~0_28 (+ aux_mod_v_main_~z~0_27_31 (* 4294967296 aux_div_v_main_~z~0_27_31))))) .cse1)))))) (or .cse0 (forall ((aux_div_v_main_~z~0_27_31 Int)) (not (= (+ aux_mod_v_main_~z~0_27_31 (* 4294967296 aux_div_v_main_~z~0_27_31)) c_main_~z~0)))))) (>= aux_mod_v_main_~z~0_27_31 4294967296) (= aux_mod_v_main_~z~0_27_31 (mod (* 2 c_main_~n~0) 4294967296)) (> 0 aux_mod_v_main_~z~0_27_31)))) is different from true [2022-03-17 15:22:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:22:53,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687447704] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:22:53,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:22:53,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 21 [2022-03-17 15:22:53,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626342028] [2022-03-17 15:22:53,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:22:53,050 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-17 15:22:53,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:22:53,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-17 15:22:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=288, Unknown=19, NotChecked=36, Total=420 [2022-03-17 15:22:53,051 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 18 states have internal predecessors, (31), 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) [2022-03-17 15:22:53,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:22:53,258 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-03-17 15:22:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 15:22:53,258 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 18 states have internal predecessors, (31), 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 17 [2022-03-17 15:22:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:22:53,259 INFO L225 Difference]: With dead ends: 34 [2022-03-17 15:22:53,259 INFO L226 Difference]: Without dead ends: 31 [2022-03-17 15:22:53,259 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=122, Invalid=463, Unknown=19, NotChecked=46, Total=650 [2022-03-17 15:22:53,260 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:22:53,260 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 65 Unchecked, 0.1s Time] [2022-03-17 15:22:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-17 15:22:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-03-17 15:22:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:22:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2022-03-17 15:22:53,267 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2022-03-17 15:22:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:22:53,267 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2022-03-17 15:22:53,268 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 18 states have internal predecessors, (31), 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) [2022-03-17 15:22:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-03-17 15:22:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 15:22:53,269 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:22:53,269 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:22:53,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-17 15:22:53,477 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:22:53,477 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:22:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:22:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1930032162, now seen corresponding path program 1 times [2022-03-17 15:22:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:22:53,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260931804] [2022-03-17 15:22:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:22:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:22:53,481 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)) [2022-03-17 15:22:53,482 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.1))) (+ .cse0 main_~x~0_8 (* (- 4294967296) (div (+ .cse0 main_~x~0_8) 4294967296)))) 0)) [2022-03-17 15:22:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:22:53,494 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)) [2022-03-17 15:22:53,499 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.4))) (+ .cse0 main_~x~0_8 (* (- 4294967296) (div (+ .cse0 main_~x~0_8) 4294967296)))) 0)) [2022-03-17 15:22:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:22:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:22:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 15:22:53,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:22:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260931804] [2022-03-17 15:22:53,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260931804] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:22:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44891560] [2022-03-17 15:22:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:22:53,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:22:53,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:22:53,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:22:53,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-17 15:22:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:22:53,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-17 15:22:53,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:22:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-17 15:22:53,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:23:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:23:22,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44891560] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:23:22,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:23:22,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-03-17 15:23:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120721118] [2022-03-17 15:23:22,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:23:22,952 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 15:23:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:23:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 15:23:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=265, Unknown=10, NotChecked=0, Total=342 [2022-03-17 15:23:22,952 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 16 states have internal predecessors, (30), 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) [2022-03-17 15:23:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:23:29,290 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2022-03-17 15:23:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 15:23:29,290 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 16 states have internal predecessors, (30), 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 17 [2022-03-17 15:23:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:23:29,291 INFO L225 Difference]: With dead ends: 37 [2022-03-17 15:23:29,291 INFO L226 Difference]: Without dead ends: 34 [2022-03-17 15:23:29,291 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=118, Invalid=469, Unknown=13, NotChecked=0, Total=600 [2022-03-17 15:23:29,293 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:23:29,293 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 51 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-03-17 15:23:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-17 15:23:29,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-03-17 15:23:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:23:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-03-17 15:23:29,295 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 17 [2022-03-17 15:23:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:23:29,295 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-03-17 15:23:29,295 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 16 states have internal predecessors, (30), 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) [2022-03-17 15:23:29,295 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-03-17 15:23:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 15:23:29,296 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:23:29,296 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:23:29,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-17 15:23:29,515 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:23:29,517 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:23:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:23:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1157045085, now seen corresponding path program 1 times [2022-03-17 15:23:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:23:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198730241] [2022-03-17 15:23:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:23:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:23:29,524 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)) [2022-03-17 15:23:29,526 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)) [2022-03-17 15:23:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:23:29,556 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)) [2022-03-17 15:23:29,559 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)) [2022-03-17 15:23:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:23:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:23:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:23:29,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:23:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198730241] [2022-03-17 15:23:29,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198730241] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:23:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833938195] [2022-03-17 15:23:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:23:29,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:23:29,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:23:29,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:23:29,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process