/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/loop-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 15:01:50,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 15:01:50,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 15:01:50,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 15:01:50,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 15:01:50,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 15:01:50,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 15:01:50,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 15:01:50,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 15:01:50,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 15:01:50,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 15:01:50,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 15:01:50,243 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 15:01:50,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 15:01:50,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 15:01:50,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 15:01:50,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 15:01:50,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 15:01:50,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 15:01:50,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 15:01:50,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 15:01:50,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 15:01:50,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 15:01:50,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 15:01:50,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 15:01:50,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 15:01:50,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 15:01:50,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 15:01:50,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 15:01:50,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 15:01:50,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 15:01:50,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 15:01:50,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:01:50,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 15:01:50,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 15:01:50,270 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 15:01:50,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 15:01:50,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 15:01:50,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 15:01:50,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 15:01:50,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 15:01:50,478 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 15:01:50,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2022-03-17 15:01:50,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45dcacd3/f50325f0c8724ff39b1718b154707bf7/FLAG0ea8a5c0c [2022-03-17 15:01:50,878 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 15:01:50,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2022-03-17 15:01:50,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45dcacd3/f50325f0c8724ff39b1718b154707bf7/FLAG0ea8a5c0c [2022-03-17 15:01:50,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45dcacd3/f50325f0c8724ff39b1718b154707bf7 [2022-03-17 15:01:50,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 15:01:50,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 15:01:50,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 15:01:50,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 15:01:50,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 15:01:50,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:01:50" (1/1) ... [2022-03-17 15:01:50,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad86d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:50, skipping insertion in model container [2022-03-17 15:01:50,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:01:50" (1/1) ... [2022-03-17 15:01:50,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 15:01:50,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 15:01:51,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i[895,908] [2022-03-17 15:01:51,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:01:51,054 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 15:01:51,069 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i[895,908] [2022-03-17 15:01:51,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:01:51,087 INFO L208 MainTranslator]: Completed translation [2022-03-17 15:01:51,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51 WrapperNode [2022-03-17 15:01:51,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 15:01:51,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 15:01:51,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 15:01:51,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 15:01:51,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 15:01:51,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 15:01:51,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 15:01:51,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 15:01:51,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:01:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:01:51,168 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 15:01:51,222 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 15:01:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 15:01:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 15:01:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 15:01:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 15:01:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 15:01:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 15:01:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 15:01:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 15:01:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-17 15:01:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-17 15:01:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 15:01:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 15:01:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 15:01:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 15:01:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 15:01:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 15:01:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 15:01:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 15:01:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 15:01:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 15:01:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 15:01:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 15:01:51,295 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 15:01:51,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 15:01:51,397 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 15:01:51,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 15:01:51,404 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 15:01:51,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:01:51 BoogieIcfgContainer [2022-03-17 15:01:51,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 15:01:51,425 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 15:01:51,425 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 15:01:51,426 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 15:01:51,428 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:01:51" (1/1) ... [2022-03-17 15:01:58,164 WARN L232 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 78 DAG size of output: 72 (called from [L 564] de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.buildAccelerationFormula) [2022-03-17 15:01:58,174 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-17 15:01:58,175 INFO L91 elerationTransformer]: Accelerated Formula: (and (< v_main_~x~0_3 0) (= (+ v_main_~x~0_3 v_main_~y~0_5) v_main_~x~0_2) (= v_main_~y~0_4 (+ v_main_~y~0_5 1))) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_5} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_4, main_#t~post2=|v_main_#t~post2_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post2] to Formula: (let ((.cse0 (< v_main_~x~0_3 0)) (.cse2 (* (- 1) v_main_~y~0_4))) (or (let ((.cse1 (div (+ v_main_~y~0_5 .cse2) (- 2)))) (and (forall ((v_itHalf_1 Int)) (or (< (+ v_main_~x~0_3 v_main_~y~0_5 v_itHalf_1 (* 2 (* v_itHalf_1 v_itHalf_1)) (* 2 (* v_main_~y~0_5 v_itHalf_1))) 0) (not (<= 0 v_itHalf_1)) (not (<= (+ v_itHalf_1 1) (div (+ v_main_~y~0_5 (* (- 1) v_main_~y~0_4)) (- 2)))))) .cse0 (= (mod (+ v_main_~y~0_4 v_main_~y~0_5) 2) 0) (= (+ v_main_~x~0_3 (* (* v_main_~y~0_5 .cse1) 2) (* (* .cse1 .cse1) 2)) (+ v_main_~x~0_2 .cse1)) (< 0 .cse1))) (let ((.cse3 (div (+ v_main_~y~0_5 .cse2 1) (- 2)))) (and (<= 0 .cse3) (forall ((v_itHalf_1 Int)) (or (< (+ v_main_~x~0_3 (* 2 (* v_itHalf_1 v_itHalf_1)) (* 2 (* v_main_~y~0_5 v_itHalf_1))) v_itHalf_1) (not (<= 1 v_itHalf_1)) (not (<= v_itHalf_1 (div (+ v_main_~y~0_5 (* (- 1) v_main_~y~0_4) 1) (- 2)))))) .cse0 (= (+ v_main_~x~0_3 v_main_~y~0_5 (* (* v_main_~y~0_5 .cse3) 2) .cse3 (* (* .cse3 .cse3) 2)) v_main_~x~0_2) (= (mod (+ v_main_~y~0_4 v_main_~y~0_5 1) 2) 0))) (and (= v_main_~y~0_4 v_main_~y~0_5) (<= 0 v_main_~x~0_3) (= |v_main_#t~post2_3| |v_main_#t~post2_1|) (= v_main_~x~0_3 v_main_~x~0_2)))) InVars {main_~y~0=v_main_~y~0_5, main_#t~post2=|v_main_#t~post2_3|, main_~x~0=v_main_~x~0_3} OutVars{main_~y~0=v_main_~y~0_4, main_#t~post2=|v_main_#t~post2_1|, main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post2] [2022-03-17 15:01:58,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:01:58 BasicIcfg [2022-03-17 15:01:58,188 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 15:01:58,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 15:01:58,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 15:01:58,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 15:01:58,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:01:50" (1/4) ... [2022-03-17 15:01:58,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8f2699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:01:58, skipping insertion in model container [2022-03-17 15:01:58,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:51" (2/4) ... [2022-03-17 15:01:58,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8f2699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:01:58, skipping insertion in model container [2022-03-17 15:01:58,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:01:51" (3/4) ... [2022-03-17 15:01:58,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8f2699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:01:58, skipping insertion in model container [2022-03-17 15:01:58,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:01:58" (4/4) ... [2022-03-17 15:01:58,199 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.iJordan [2022-03-17 15:01:58,203 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 15:01:58,203 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 15:01:58,231 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 15:01:58,234 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 15:01:58,234 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 15:01:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 15:01:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 15:01:58,248 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:01:58,249 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:01:58,249 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:01:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:01:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1291699483, now seen corresponding path program 1 times [2022-03-17 15:01:58,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:01:58,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991928487] [2022-03-17 15:01:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:58,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:01:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:01:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:58,339 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 15:01:58,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:01:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991928487] [2022-03-17 15:01:58,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991928487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:01:58,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:01:58,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 15:01:58,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178853839] [2022-03-17 15:01:58,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:01:58,344 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 15:01:58,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:01:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 15:01:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:01:58,361 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2022-03-17 15:01:58,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:01:58,380 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-03-17 15:01:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 15:01:58,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2022-03-17 15:01:58,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:01:58,386 INFO L225 Difference]: With dead ends: 20 [2022-03-17 15:01:58,386 INFO L226 Difference]: Without dead ends: 13 [2022-03-17 15:01:58,386 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 15:01:58,388 INFO L912 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 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 15:01:58,389 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:01:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-17 15:01:58,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-17 15:01:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:01:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-17 15:01:58,406 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-03-17 15:01:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:01:58,407 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-17 15:01:58,407 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2022-03-17 15:01:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-17 15:01:58,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 15:01:58,407 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:01:58,407 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:01:58,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 15:01:58,407 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:01:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:01:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1292623004, now seen corresponding path program 1 times [2022-03-17 15:01:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:01:58,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978173508] [2022-03-17 15:01:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:01:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:01:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:58,441 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 15:01:58,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:01:58,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978173508] [2022-03-17 15:01:58,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978173508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:01:58,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:01:58,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 15:01:58,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265705864] [2022-03-17 15:01:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:01:58,442 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 15:01:58,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:01:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 15:01:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 15:01:58,443 INFO L87 Difference]: Start difference. First operand 13 states and 13 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) [2022-03-17 15:01:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:01:58,457 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-03-17 15:01:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 15:01:58,457 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 [2022-03-17 15:01:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:01:58,458 INFO L225 Difference]: With dead ends: 14 [2022-03-17 15:01:58,458 INFO L226 Difference]: Without dead ends: 14 [2022-03-17 15:01:58,458 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 15:01:58,459 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:01:58,459 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-03-17 15:01:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-17 15:01:58,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-17 15:01:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 15:01:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-17 15:01:58,462 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-03-17 15:01:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:01:58,462 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-17 15:01:58,462 INFO L479 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) [2022-03-17 15:01:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-17 15:01:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 15:01:58,462 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:01:58,462 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:01:58,463 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 15:01:58,463 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:01:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:01:58,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1443329038, now seen corresponding path program 1 times [2022-03-17 15:01:58,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:01:58,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769318210] [2022-03-17 15:01:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:01:58,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 15:01:58,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488459980] [2022-03-17 15:01:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:58,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:01:58,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:01:58,475 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 15:01:58,557 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 15:01:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:58,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-17 15:01:58,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:02:05,749 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 15:02:05,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:02:06,178 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 15:02:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:02:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769318210] [2022-03-17 15:02:06,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 15:02:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488459980] [2022-03-17 15:02:06,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488459980] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-17 15:02:06,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 15:02:06,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2022-03-17 15:02:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180225018] [2022-03-17 15:02:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:02:06,180 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 15:02:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:02:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 15:02:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-17 15:02:06,181 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 15:02:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:02:06,202 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-03-17 15:02:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 15:02:06,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 13 [2022-03-17 15:02:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:02:06,203 INFO L225 Difference]: With dead ends: 12 [2022-03-17 15:02:06,203 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 15:02:06,203 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-17 15:02:06,204 INFO L912 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:02:06,205 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-03-17 15:02:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 15:02:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 15:02:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 15:02:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 15:02:06,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-03-17 15:02:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:02:06,205 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 15:02:06,206 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 15:02:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 15:02:06,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 15:02:06,209 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 15:02:06,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 15:02:06,423 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 15:02:06,426 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-17 15:02:06,427 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 15:02:06,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:02:06 BasicIcfg [2022-03-17 15:02:06,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 15:02:06,431 INFO L158 Benchmark]: Toolchain (without parser) took 15533.82ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 130.5MB in the beginning and 117.1MB in the end (delta: 13.3MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-03-17 15:02:06,431 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 15:02:06,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.45ms. Allocated memory is still 186.6MB. Free memory was 130.3MB in the beginning and 157.4MB in the end (delta: -27.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-17 15:02:06,432 INFO L158 Benchmark]: Boogie Preprocessor took 34.93ms. Allocated memory is still 186.6MB. Free memory was 157.4MB in the beginning and 155.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 15:02:06,432 INFO L158 Benchmark]: RCFGBuilder took 300.24ms. Allocated memory is still 186.6MB. Free memory was 155.9MB in the beginning and 145.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 15:02:06,432 INFO L158 Benchmark]: IcfgTransformer took 6762.30ms. Allocated memory is still 186.6MB. Free memory was 145.4MB in the beginning and 122.8MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-03-17 15:02:06,433 INFO L158 Benchmark]: TraceAbstraction took 8238.18ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 122.4MB in the beginning and 117.1MB in the end (delta: 5.2MB). Peak memory consumption was 44.3MB. Max. memory is 8.0GB. [2022-03-17 15:02:06,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.45ms. Allocated memory is still 186.6MB. Free memory was 130.3MB in the beginning and 157.4MB in the end (delta: -27.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.93ms. Allocated memory is still 186.6MB. Free memory was 157.4MB in the beginning and 155.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 300.24ms. Allocated memory is still 186.6MB. Free memory was 155.9MB in the beginning and 145.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 6762.30ms. Allocated memory is still 186.6MB. Free memory was 145.4MB in the beginning and 122.8MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 8238.18ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 122.4MB in the beginning and 117.1MB in the end (delta: 5.2MB). Peak memory consumption was 44.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 2 QuantifiedInterpolants, 532 SizeOfPredicates, 3 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-17 15:02:06,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...