/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/nla-digbench-scaling/egcd2-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 02:21:55,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 02:21:55,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 02:21:55,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 02:21:55,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 02:21:55,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 02:21:55,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 02:21:55,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 02:21:55,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 02:21:55,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 02:21:55,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 02:21:55,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 02:21:55,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 02:21:55,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 02:21:55,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 02:21:55,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 02:21:55,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 02:21:55,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 02:21:55,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 02:21:55,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 02:21:55,992 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 02:21:55,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 02:21:55,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 02:21:55,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 02:21:55,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 02:21:56,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-05 02:21:56,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-05 02:21:56,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-05 02:21:56,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-05 02:21:56,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-05 02:21:56,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-05 02:21:56,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-05 02:21:56,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-05 02:21:56,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-05 02:21:56,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-05 02:21:56,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-05 02:21:56,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-05 02:21:56,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-05 02:21:56,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-05 02:21:56,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 02:21:56,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 02:21:56,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 02:21:56,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 02:21:56,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 02:21:56,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 02:21:56,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 02:21:56,016 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 02:21:56,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 02:21:56,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 02:21:56,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 02:21:56,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 02:21:56,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 02:21:56,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 02:21:56,017 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 02:21:56,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 02:21:56,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 02:21:56,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 02:21:56,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 02:21:56,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 02:21:56,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 02:21:56,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 02:21:56,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:21:56,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 02:21:56,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 02:21:56,019 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 02:21:56,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 02:21:56,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 02:21:56,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 02:21:56,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 02:21:56,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 02:21:56,202 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 02:21:56,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2022-04-05 02:21:56,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57d22f961/6b82f6ab4b8d484cbd9bb058726716ff/FLAG42d0e0ed2 [2022-04-05 02:21:56,620 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 02:21:56,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2022-04-05 02:21:56,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57d22f961/6b82f6ab4b8d484cbd9bb058726716ff/FLAG42d0e0ed2 [2022-04-05 02:21:57,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57d22f961/6b82f6ab4b8d484cbd9bb058726716ff [2022-04-05 02:21:57,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 02:21:57,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 02:21:57,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 02:21:57,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 02:21:57,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 02:21:57,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e408e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57, skipping insertion in model container [2022-04-05 02:21:57,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 02:21:57,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 02:21:57,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2022-04-05 02:21:57,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:21:57,258 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 02:21:57,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2022-04-05 02:21:57,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:21:57,289 INFO L208 MainTranslator]: Completed translation [2022-04-05 02:21:57,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57 WrapperNode [2022-04-05 02:21:57,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 02:21:57,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 02:21:57,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 02:21:57,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 02:21:57,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 02:21:57,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 02:21:57,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 02:21:57,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 02:21:57,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:21:57,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:57,355 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) [2022-04-05 02:21:57,357 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 [2022-04-05 02:21:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 02:21:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 02:21:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 02:21:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 02:21:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 02:21:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 02:21:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 02:21:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 02:21:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 02:21:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 02:21:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 02:21:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 02:21:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 02:21:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 02:21:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 02:21:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 02:21:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 02:21:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 02:21:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 02:21:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 02:21:57,444 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 02:21:57,445 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 02:21:57,582 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 02:21:57,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 02:21:57,593 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 02:21:57,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:57 BoogieIcfgContainer [2022-04-05 02:21:57,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 02:21:57,595 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 02:21:57,595 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 02:21:57,608 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 02:21:57,610 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:57" (1/1) ... [2022-04-05 02:21:57,612 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 02:21:57,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:21:57 BasicIcfg [2022-04-05 02:21:57,639 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 02:21:57,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 02:21:57,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 02:21:57,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 02:21:57,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:21:57" (1/4) ... [2022-04-05 02:21:57,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393aecab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:21:57, skipping insertion in model container [2022-04-05 02:21:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:57" (2/4) ... [2022-04-05 02:21:57,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393aecab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:21:57, skipping insertion in model container [2022-04-05 02:21:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:57" (3/4) ... [2022-04-05 02:21:57,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393aecab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:21:57, skipping insertion in model container [2022-04-05 02:21:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:21:57" (4/4) ... [2022-04-05 02:21:57,645 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.cJordan [2022-04-05 02:21:57,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 02:21:57,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 02:21:57,682 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 02:21:57,687 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 [2022-04-05 02:21:57,687 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 02:21:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 02:21:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-05 02:21:57,703 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:57,704 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:57,704 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash -282167495, now seen corresponding path program 1 times [2022-04-05 02:21:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:57,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663320271] [2022-04-05 02:21:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:57,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:57,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:57,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022262387] [2022-04-05 02:21:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:57,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:57,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:57,847 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) [2022-04-05 02:21:57,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 02:21:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:57,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-05 02:21:57,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:21:58,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:58,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:58,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663320271] [2022-04-05 02:21:58,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:58,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022262387] [2022-04-05 02:21:58,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022262387] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:58,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:58,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-05 02:21:58,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668126335] [2022-04-05 02:21:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:58,037 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-05 02:21:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-05 02:21:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-05 02:21:58,066 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:21:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:58,091 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-04-05 02:21:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-05 02:21:58,093 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2022-04-05 02:21:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:58,097 INFO L225 Difference]: With dead ends: 39 [2022-04-05 02:21:58,098 INFO L226 Difference]: Without dead ends: 34 [2022-04-05 02:21:58,099 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-05 02:21:58,101 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:58,102 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-05 02:21:58,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-05 02:21:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:21:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-04-05 02:21:58,128 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 32 [2022-04-05 02:21:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:58,129 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-04-05 02:21:58,130 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:21:58,130 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-04-05 02:21:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:21:58,131 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:58,131 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:58,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-05 02:21:58,344 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-05 02:21:58,345 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash -127828113, now seen corresponding path program 1 times [2022-04-05 02:21:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332468714] [2022-04-05 02:21:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:58,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:58,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356061624] [2022-04-05 02:21:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:58,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:58,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:58,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:21:58,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 02:21:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:58,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:21:58,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:21:58,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:58,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332468714] [2022-04-05 02:21:58,541 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356061624] [2022-04-05 02:21:58,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356061624] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:58,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:58,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 02:21:58,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915402413] [2022-04-05 02:21:58,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:58,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 02:21:58,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 02:21:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:21:58,544 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:21:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:58,558 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-04-05 02:21:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 02:21:58,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-05 02:21:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:58,560 INFO L225 Difference]: With dead ends: 36 [2022-04-05 02:21:58,560 INFO L226 Difference]: Without dead ends: 36 [2022-04-05 02:21:58,560 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:21:58,561 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:58,561 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-05 02:21:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-05 02:21:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:21:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-04-05 02:21:58,566 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 33 [2022-04-05 02:21:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:58,566 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-04-05 02:21:58,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:21:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-04-05 02:21:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-05 02:21:58,567 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:58,568 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:58,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 02:21:58,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-05 02:21:58,784 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 365419517, now seen corresponding path program 1 times [2022-04-05 02:21:58,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:58,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627436657] [2022-04-05 02:21:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:58,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:58,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:58,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584992366] [2022-04-05 02:21:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:58,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:58,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:58,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:21:58,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 02:21:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:58,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:21:58,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:21:58,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:21:59,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627436657] [2022-04-05 02:21:59,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584992366] [2022-04-05 02:21:59,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584992366] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:59,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:59,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-04-05 02:21:59,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527284362] [2022-04-05 02:21:59,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:59,078 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 02:21:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 02:21:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-05 02:21:59,080 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:21:59,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:59,162 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2022-04-05 02:21:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:21:59,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-05 02:21:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:59,166 INFO L225 Difference]: With dead ends: 45 [2022-04-05 02:21:59,166 INFO L226 Difference]: Without dead ends: 45 [2022-04-05 02:21:59,166 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:21:59,169 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:59,172 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 108 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-04-05 02:21:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-04-05 02:21:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:21:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-04-05 02:21:59,182 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 34 [2022-04-05 02:21:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:59,182 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-04-05 02:21:59,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:21:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-04-05 02:21:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-05 02:21:59,183 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:59,183 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:59,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 02:21:59,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:59,385 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:59,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash 196514290, now seen corresponding path program 1 times [2022-04-05 02:21:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:59,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626869275] [2022-04-05 02:21:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:59,395 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:59,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129474305] [2022-04-05 02:21:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:59,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:59,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:59,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:21:59,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 02:21:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:59,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 02:21:59,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:21:59,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:21:59,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:59,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626869275] [2022-04-05 02:21:59,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:59,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129474305] [2022-04-05 02:21:59,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129474305] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:21:59,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:21:59,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-05 02:21:59,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687920845] [2022-04-05 02:21:59,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:59,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:59,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:21:59,675 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:21:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:59,711 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-04-05 02:21:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:59,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2022-04-05 02:21:59,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:59,712 INFO L225 Difference]: With dead ends: 41 [2022-04-05 02:21:59,712 INFO L226 Difference]: Without dead ends: 41 [2022-04-05 02:21:59,712 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:21:59,713 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:59,713 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-05 02:21:59,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-05 02:21:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:21:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-04-05 02:21:59,717 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2022-04-05 02:21:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:59,717 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-04-05 02:21:59,717 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:21:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-04-05 02:21:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-05 02:21:59,718 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:59,718 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:59,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 02:21:59,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:59,924 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash 56558454, now seen corresponding path program 1 times [2022-04-05 02:21:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:59,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858774317] [2022-04-05 02:21:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:59,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:59,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185244520] [2022-04-05 02:21:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:59,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:59,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:21:59,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 02:21:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:59,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:21:59,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:22:00,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:22:00,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858774317] [2022-04-05 02:22:00,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185244520] [2022-04-05 02:22:00,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185244520] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:22:00,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:22:00,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:22:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660484620] [2022-04-05 02:22:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:00,080 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:00,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:22:00,081 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:00,103 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-04-05 02:22:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:22:00,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-04-05 02:22:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:00,104 INFO L225 Difference]: With dead ends: 43 [2022-04-05 02:22:00,104 INFO L226 Difference]: Without dead ends: 43 [2022-04-05 02:22:00,104 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:22:00,104 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:00,105 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-05 02:22:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-04-05 02:22:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:22:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-04-05 02:22:00,108 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 39 [2022-04-05 02:22:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:00,108 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-04-05 02:22:00,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-04-05 02:22:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-05 02:22:00,109 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:00,109 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:00,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:00,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:00,326 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash 578094295, now seen corresponding path program 1 times [2022-04-05 02:22:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:00,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049477549] [2022-04-05 02:22:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:00,335 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:00,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044577179] [2022-04-05 02:22:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:00,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:00,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:00,337 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:00,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 02:22:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:00,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 02:22:00,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:22:00,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:22:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049477549] [2022-04-05 02:22:00,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044577179] [2022-04-05 02:22:00,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044577179] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:00,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:00,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-04-05 02:22:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79550090] [2022-04-05 02:22:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:00,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:22:00,634 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:22:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:00,666 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-04-05 02:22:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:22:00,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-04-05 02:22:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:00,667 INFO L225 Difference]: With dead ends: 55 [2022-04-05 02:22:00,667 INFO L226 Difference]: Without dead ends: 55 [2022-04-05 02:22:00,667 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:22:00,668 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:00,668 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-05 02:22:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2022-04-05 02:22:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 02:22:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-04-05 02:22:00,672 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 41 [2022-04-05 02:22:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:00,672 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-04-05 02:22:00,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:22:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-04-05 02:22:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 02:22:00,673 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:00,673 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:00,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:00,889 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:00,892 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1581112078, now seen corresponding path program 1 times [2022-04-05 02:22:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:00,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757668737] [2022-04-05 02:22:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:00,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:00,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:00,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845446836] [2022-04-05 02:22:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:00,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:00,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:00,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:00,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-05 02:22:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:00,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 02:22:00,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-05 02:22:01,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-05 02:22:01,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757668737] [2022-04-05 02:22:01,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845446836] [2022-04-05 02:22:01,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845446836] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:01,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:01,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-04-05 02:22:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534604219] [2022-04-05 02:22:01,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:01,154 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:01,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:01,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:01,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:22:01,155 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:22:01,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:01,190 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-04-05 02:22:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:22:01,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-04-05 02:22:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:01,191 INFO L225 Difference]: With dead ends: 59 [2022-04-05 02:22:01,192 INFO L226 Difference]: Without dead ends: 59 [2022-04-05 02:22:01,192 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:22:01,192 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:01,192 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-05 02:22:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-04-05 02:22:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 02:22:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-04-05 02:22:01,196 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 46 [2022-04-05 02:22:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:01,196 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-04-05 02:22:01,196 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:22:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-04-05 02:22:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 02:22:01,197 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:01,197 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:01,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:01,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:01,414 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:01,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1942645143, now seen corresponding path program 1 times [2022-04-05 02:22:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:01,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772000873] [2022-04-05 02:22:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:01,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:01,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:01,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049829952] [2022-04-05 02:22:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:01,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:01,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:01,424 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:01,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-05 02:22:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:01,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-05 02:22:01,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-05 02:22:01,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:01,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:01,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772000873] [2022-04-05 02:22:01,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:01,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049829952] [2022-04-05 02:22:01,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049829952] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:01,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:01,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-04-05 02:22:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335848309] [2022-04-05 02:22:01,750 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:01,751 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:22:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:22:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:22:01,752 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:22:01,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:01,920 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-04-05 02:22:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 02:22:01,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-04-05 02:22:01,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:01,922 INFO L225 Difference]: With dead ends: 63 [2022-04-05 02:22:01,922 INFO L226 Difference]: Without dead ends: 63 [2022-04-05 02:22:01,922 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-04-05 02:22:01,923 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:01,923 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 153 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:22:01,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-04-05 02:22:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-04-05 02:22:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 02:22:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-04-05 02:22:01,933 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 51 [2022-04-05 02:22:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:01,933 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-04-05 02:22:01,934 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:22:01,935 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-04-05 02:22:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 02:22:01,938 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:01,939 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:01,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:02,155 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-04-05 02:22:02,155 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1573186588, now seen corresponding path program 1 times [2022-04-05 02:22:02,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:02,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801120691] [2022-04-05 02:22:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:02,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:02,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207739123] [2022-04-05 02:22:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:02,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:02,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:02,184 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:02,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 02:22:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 02:22:02,232 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 02:22:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 02:22:02,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 02:22:02,302 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 02:22:02,303 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 02:22:02,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:02,516 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:02,519 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:02,521 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 02:22:02,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:22:02 BasicIcfg [2022-04-05 02:22:02,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 02:22:02,569 INFO L158 Benchmark]: Toolchain (without parser) took 5557.70ms. Allocated memory was 210.8MB in the beginning and 297.8MB in the end (delta: 87.0MB). Free memory was 165.0MB in the beginning and 191.2MB in the end (delta: -26.2MB). Peak memory consumption was 61.4MB. Max. memory is 8.0GB. [2022-04-05 02:22:02,569 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 180.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:22:02,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.64ms. Allocated memory is still 210.8MB. Free memory was 164.8MB in the beginning and 189.8MB in the end (delta: -25.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 02:22:02,569 INFO L158 Benchmark]: Boogie Preprocessor took 21.30ms. Allocated memory is still 210.8MB. Free memory was 189.8MB in the beginning and 188.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 02:22:02,569 INFO L158 Benchmark]: RCFGBuilder took 282.84ms. Allocated memory is still 210.8MB. Free memory was 188.2MB in the beginning and 176.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 02:22:02,570 INFO L158 Benchmark]: IcfgTransformer took 43.76ms. Allocated memory is still 210.8MB. Free memory was 176.7MB in the beginning and 175.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:22:02,570 INFO L158 Benchmark]: TraceAbstraction took 4928.42ms. Allocated memory was 210.8MB in the beginning and 297.8MB in the end (delta: 87.0MB). Free memory was 174.6MB in the beginning and 191.2MB in the end (delta: -16.6MB). Peak memory consumption was 70.9MB. Max. memory is 8.0GB. [2022-04-05 02:22:02,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 180.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.64ms. Allocated memory is still 210.8MB. Free memory was 164.8MB in the beginning and 189.8MB in the end (delta: -25.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.30ms. Allocated memory is still 210.8MB. Free memory was 189.8MB in the beginning and 188.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 282.84ms. Allocated memory is still 210.8MB. Free memory was 188.2MB in the beginning and 176.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 43.76ms. Allocated memory is still 210.8MB. Free memory was 176.7MB in the beginning and 175.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 4928.42ms. Allocated memory was 210.8MB in the beginning and 297.8MB in the end (delta: 87.0MB). Free memory was 174.6MB in the beginning and 191.2MB in the end (delta: -16.6MB). Peak memory consumption was 70.9MB. 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=5, counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=1, y=2] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=1, y=2] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [\old(counter)=0, a=1, b=2, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [\old(counter)=0, a=1, b=2, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [\old(counter)=0, a=1, b=2, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L40] EXPR counter++ VAL [\old(counter)=0, a=1, b=2, c=0, counter=1, counter++=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L40] COND TRUE counter++<2 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=1, b=2, c=1, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L46] EXPR counter++ VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L46] COND TRUE counter++<2 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=2, b=1, c=1, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, xy=2, y=2, yy=4] [L40] EXPR counter++ VAL [\old(counter)=0, a=2, b=1, c=1, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, xy=2, y=2, yy=4] [L40] COND FALSE !(counter++<2) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 990 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 656 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 412 IncrementalHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 334 mSDtfsCounter, 412 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 419 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=8, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 372 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 1324 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1121 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 287/328 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-05 02:22:02,594 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...