/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 04:02:06,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 04:02:06,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 04:02:06,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 04:02:06,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 04:02:06,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 04:02:06,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 04:02:06,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 04:02:06,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 04:02:06,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 04:02:06,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 04:02:06,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 04:02:06,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 04:02:06,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 04:02:06,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 04:02:06,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 04:02:06,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 04:02:06,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 04:02:06,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 04:02:06,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 04:02:06,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 04:02:06,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 04:02:06,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 04:02:06,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 04:02:06,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 04:02:06,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 04:02:06,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 04:02:06,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 04:02:06,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 04:02:06,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 04:02:06,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 04:02:06,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 04:02:06,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 04:02:06,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 04:02:06,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 04:02:06,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 04:02:06,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 04:02:06,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 04:02:06,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 04:02:06,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 04:02:06,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 04:02:06,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-01 04:02:06,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 04:02:06,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 04:02:06,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 04:02:06,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 04:02:06,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 04:02:06,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 04:02:06,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 04:02:06,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 04:02:06,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 04:02:06,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 04:02:06,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 04:02:06,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 04:02:06,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 04:02:06,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 04:02:06,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 04:02:06,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 04:02:06,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 04:02:06,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 04:02:06,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 04:02:06,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 04:02:06,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 04:02:06,561 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-01 04:02:06,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 04:02:06,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 04:02:06,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 04:02:06,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 04:02:06,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 04:02:06,874 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 04:02:06,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2021-05-01 04:02:06,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5189a231d/9f2d0500b8754f38a79cdfbb3adda920/FLAGde2bee670 [2021-05-01 04:02:07,617 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 04:02:07,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2021-05-01 04:02:07,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5189a231d/9f2d0500b8754f38a79cdfbb3adda920/FLAGde2bee670 [2021-05-01 04:02:07,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5189a231d/9f2d0500b8754f38a79cdfbb3adda920 [2021-05-01 04:02:07,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 04:02:07,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-01 04:02:07,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 04:02:07,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 04:02:07,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 04:02:07,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 04:02:07" (1/1) ... [2021-05-01 04:02:07,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7d8b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:07, skipping insertion in model container [2021-05-01 04:02:07,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 04:02:07" (1/1) ... [2021-05-01 04:02:07,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 04:02:07,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 04:02:07,975 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-1.c[321,334] [2021-05-01 04:02:07,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 04:02:08,001 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 04:02:08,012 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-1.c[321,334] [2021-05-01 04:02:08,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 04:02:08,036 INFO L208 MainTranslator]: Completed translation [2021-05-01 04:02:08,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08 WrapperNode [2021-05-01 04:02:08,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 04:02:08,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 04:02:08,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 04:02:08,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 04:02:08,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 04:02:08,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 04:02:08,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 04:02:08,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 04:02:08,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 04:02:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 04:02:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 04:02:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 04:02:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 04:02:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 04:02:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 04:02:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 04:02:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 04:02:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 04:02:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 04:02:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 04:02:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 04:02:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 04:02:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 04:02:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 04:02:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 04:02:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 04:02:08,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 04:02:08,442 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-01 04:02:08,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 04:02:08 BoogieIcfgContainer [2021-05-01 04:02:08,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 04:02:08,444 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-01 04:02:08,444 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-01 04:02:08,445 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-01 04:02:08,447 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 04:02:08" (1/1) ... [2021-05-01 04:02:08,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 04:02:08,541 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~z~0_3 4294967296) 268435455) InVars {main_~z~0=v_main_~z~0_3} OutVars{main_~z~0=v_main_~z~0_3} AuxVars[] AssignedVars[] [2021-05-01 04:02:08,565 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size [2021-05-01 04:02:08,582 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,615 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,655 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 04:02:08,666 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,678 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-05-01 04:02:08,687 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,693 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,700 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,703 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,707 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,710 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,714 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-01 04:02:08,754 INFO L1111 elerationTransformer]: Accelerated Formula: (and (< (mod v_main_~z~0_3 4294967296) 268435455) (= (+ v_main_~z~0_3 1) v_main_~z~0_2)) InVars {main_~z~0=v_main_~z~0_3} OutVars{main_~z~0=v_main_~z~0_2, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~z~0, main_#t~post7] with Formula: (let ((.cse1 (mod v_main_~z~0_3 4294967296))) (or (let ((.cse0 (+ v_itFin_1 v_main_~z~0_3))) (and (<= 268435455 (mod .cse0 4294967296)) (< 0 v_itFin_1) (< .cse1 268435455) (= v_main_~z~0_2 .cse0) (<= (div (+ (* v_itFin_1 (- 1)) (* v_main_~z~0_3 (- 1)) 268435455) (- 4294967296)) (+ (div (+ v_main_~z~0_3 (- 4294967295)) 4294967296) 1)))) (and (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= v_itFin_1 0) (= v_main_~z~0_3 v_main_~z~0_2) (<= 268435455 .cse1)))) InVars {main_~z~0=v_main_~z~0_3, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~z~0=v_main_~z~0_2, main_#t~post7=|v_main_#t~post7_1|} AuxVars[v_itFin_1] AssignedVars[main_~z~0, main_#t~post7] [2021-05-01 04:02:08,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 04:02:08 BasicIcfg [2021-05-01 04:02:08,764 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-01 04:02:08,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 04:02:08,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 04:02:08,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 04:02:08,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 04:02:07" (1/4) ... [2021-05-01 04:02:08,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4188df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 04:02:08, skipping insertion in model container [2021-05-01 04:02:08,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:02:08" (2/4) ... [2021-05-01 04:02:08,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4188df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 04:02:08, skipping insertion in model container [2021-05-01 04:02:08,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 04:02:08" (3/4) ... [2021-05-01 04:02:08,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4188df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 04:02:08, skipping insertion in model container [2021-05-01 04:02:08,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 04:02:08" (4/4) ... [2021-05-01 04:02:08,774 INFO L111 eAbstractionObserver]: Analyzing ICFG nested3-1.cJordan [2021-05-01 04:02:08,779 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-01 04:02:08,783 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 04:02:08,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 04:02:08,820 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 04:02:08,820 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-01 04:02:08,820 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-01 04:02:08,820 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 04:02:08,820 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 04:02:08,820 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 04:02:08,820 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 04:02:08,820 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 04:02:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 04:02:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 04:02:08,833 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:02:08,834 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:02:08,834 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:02:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:02:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1301415802, now seen corresponding path program 1 times [2021-05-01 04:02:08,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:02:08,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139502345] [2021-05-01 04:02:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:02:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:08,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:08,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:02:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:08,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:08,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:02:08,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:02:08,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139502345] [2021-05-01 04:02:08,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139502345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 04:02:08,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 04:02:08,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 04:02:08,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754187113] [2021-05-01 04:02:08,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 04:02:08,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 04:02:08,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 04:02:08,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 04:02:08,999 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 04:02:09,055 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-05-01 04:02:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 04:02:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 04:02:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 04:02:09,063 INFO L225 Difference]: With dead ends: 25 [2021-05-01 04:02:09,063 INFO L226 Difference]: Without dead ends: 20 [2021-05-01 04:02:09,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 04:02:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-01 04:02:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-01 04:02:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 04:02:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-05-01 04:02:09,109 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2021-05-01 04:02:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 04:02:09,109 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-05-01 04:02:09,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-05-01 04:02:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 04:02:09,111 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:02:09,111 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:02:09,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 04:02:09,113 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:02:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:02:09,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1302339323, now seen corresponding path program 1 times [2021-05-01 04:02:09,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:02:09,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928025966] [2021-05-01 04:02:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:02:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:09,162 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 04:02:09,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 04:02:09,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:02:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:02:09,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:02:09,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928025966] [2021-05-01 04:02:09,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928025966] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 04:02:09,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 04:02:09,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 04:02:09,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920720189] [2021-05-01 04:02:09,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 04:02:09,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 04:02:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 04:02:09,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 04:02:09,217 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 04:02:09,301 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-05-01 04:02:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 04:02:09,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 04:02:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 04:02:09,302 INFO L225 Difference]: With dead ends: 27 [2021-05-01 04:02:09,302 INFO L226 Difference]: Without dead ends: 27 [2021-05-01 04:02:09,303 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 04:02:09,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-01 04:02:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-05-01 04:02:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 04:02:09,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-05-01 04:02:09,308 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2021-05-01 04:02:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 04:02:09,309 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-05-01 04:02:09,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-05-01 04:02:09,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 04:02:09,309 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:02:09,309 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:02:09,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 04:02:09,310 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:02:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:02:09,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1748313539, now seen corresponding path program 1 times [2021-05-01 04:02:09,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:02:09,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037942849] [2021-05-01 04:02:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:02:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:09,345 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 04:02:09,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 04:02:09,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:02:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:02:09,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:02:09,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037942849] [2021-05-01 04:02:09,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037942849] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 04:02:09,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 04:02:09,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 04:02:09,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452896710] [2021-05-01 04:02:09,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 04:02:09,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 04:02:09,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 04:02:09,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 04:02:09,399 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 04:02:09,502 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-05-01 04:02:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 04:02:09,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2021-05-01 04:02:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 04:02:09,504 INFO L225 Difference]: With dead ends: 25 [2021-05-01 04:02:09,504 INFO L226 Difference]: Without dead ends: 25 [2021-05-01 04:02:09,504 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 04:02:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-01 04:02:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-05-01 04:02:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 04:02:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-05-01 04:02:09,507 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2021-05-01 04:02:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 04:02:09,508 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-05-01 04:02:09,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,508 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-05-01 04:02:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-01 04:02:09,508 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:02:09,509 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:02:09,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 04:02:09,509 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:02:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:02:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1606116621, now seen corresponding path program 1 times [2021-05-01 04:02:09,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:02:09,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795734465] [2021-05-01 04:02:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:02:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:09,543 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 04:02:09,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 04:02:09,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:02:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:02:09,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:02:09,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795734465] [2021-05-01 04:02:09,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795734465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 04:02:09,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 04:02:09,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 04:02:09,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616991991] [2021-05-01 04:02:09,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 04:02:09,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 04:02:09,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 04:02:09,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 04:02:09,575 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 04:02:09,643 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-05-01 04:02:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 04:02:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2021-05-01 04:02:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 04:02:09,644 INFO L225 Difference]: With dead ends: 24 [2021-05-01 04:02:09,644 INFO L226 Difference]: Without dead ends: 24 [2021-05-01 04:02:09,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 04:02:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-01 04:02:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-05-01 04:02:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 04:02:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-05-01 04:02:09,648 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2021-05-01 04:02:09,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 04:02:09,648 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-05-01 04:02:09,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 04:02:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-05-01 04:02:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 04:02:09,649 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:02:09,649 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:02:09,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 04:02:09,649 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:02:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:02:09,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1773342651, now seen corresponding path program 1 times [2021-05-01 04:02:09,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:02:09,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057415725] [2021-05-01 04:02:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:02:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:09,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 04:02:09,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:02:09,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:02:09,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:02:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:02:09,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:02:09,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057415725] [2021-05-01 04:02:09,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057415725] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-01 04:02:09,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479319193] [2021-05-01 04:02:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-01 04:02:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:02:09,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-01 04:02:09,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-01 04:02:09,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:09,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:09,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:10,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:10,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:10,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:02:10,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:10,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:10,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:10,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:02:10,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:02:10,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,189 INFO L849 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 04:02:10,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,254 INFO L142 QuantifierPusher]: treesize reduction 12, result has 94.5 percent of original size [2021-05-01 04:02:10,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-05-01 04:02:10,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-05-01 04:02:10,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-05-01 04:02:10,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-05-01 04:02:10,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 04:02:10,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,370 INFO L147 QuantifierPusher]: treesize reduction -4, result has 111.1 percent of original size 40 [2021-05-01 04:02:10,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 04:02:10,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,381 INFO L142 QuantifierPusher]: treesize reduction -5, result has 106.5 percent of original size [2021-05-01 04:02:10,510 INFO L849 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 04:02:10,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,628 INFO L147 QuantifierPusher]: treesize reduction -2, result has 108.3 percent of original size 26 [2021-05-01 04:02:10,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,631 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.7 percent of original size [2021-05-01 04:02:10,634 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.9 percent of original size 36 [2021-05-01 04:02:10,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,639 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.1 percent of original size 41 [2021-05-01 04:02:10,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,641 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.2 percent of original size [2021-05-01 04:02:10,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 04:02:10,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,647 INFO L147 QuantifierPusher]: treesize reduction -2, result has 108.7 percent of original size 25 [2021-05-01 04:02:10,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:02:10,650 INFO L147 QuantifierPusher]: treesize reduction -3, result has 108.3 percent of original size 39 [2021-05-01 04:02:10,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:02:10,652 INFO L142 QuantifierPusher]: treesize reduction -4, result has 103.3 percent of original size [2021-05-01 04:02:10,844 INFO L849 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 04:02:11,273 INFO L849 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 04:02:12,054 INFO L849 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 04:02:13,031 INFO L849 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 04:02:14,230 INFO L849 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 04:02:49,796 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-01 04:02:49,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-01 04:02:49,998 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.OutOfMemoryError: Java heap space at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:615) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:205) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:125) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:112) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher$$Lambda$473/0x0000000840511840.eliminate(Unknown Source) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:405) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) [2021-05-01 04:02:50,000 INFO L168 Benchmark]: Toolchain (without parser) took 42190.18 ms. Allocated memory was 203.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 169.8 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-05-01 04:02:50,001 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 203.4 MB. Free memory is still 186.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 04:02:50,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.87 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 160.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 04:02:50,001 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 04:02:50,002 INFO L168 Benchmark]: RCFGBuilder took 377.90 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 174.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-05-01 04:02:50,002 INFO L168 Benchmark]: IcfgTransformer took 320.32 ms. Allocated memory is still 203.4 MB. Free memory was 174.3 MB in the beginning and 160.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-01 04:02:50,002 INFO L168 Benchmark]: TraceAbstraction took 41233.44 ms. Allocated memory was 203.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 160.0 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-05-01 04:02:50,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 203.4 MB. Free memory is still 186.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 222.87 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 160.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.77 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 377.90 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 174.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. * IcfgTransformer took 320.32 ms. Allocated memory is still 203.4 MB. Free memory was 174.3 MB in the beginning and 160.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 41233.44 ms. Allocated memory was 203.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 160.0 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: OutOfMemoryError: Java heap space de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: OutOfMemoryError: Java heap space: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...