/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/sqrt1-ll_unwindbound1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-05ce600
[2022-02-23 19:51:43,648 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-23 19:51:43,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-23 19:51:43,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-23 19:51:43,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-23 19:51:43,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-23 19:51:43,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-23 19:51:43,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-23 19:51:43,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-23 19:51:43,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-23 19:51:43,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-23 19:51:43,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-23 19:51:43,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-23 19:51:43,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-23 19:51:43,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-23 19:51:43,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-23 19:51:43,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-23 19:51:43,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-23 19:51:43,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-23 19:51:43,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-23 19:51:43,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-23 19:51:43,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-23 19:51:43,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-23 19:51:43,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-23 19:51:43,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-23 19:51:43,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-23 19:51:43,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-23 19:51:43,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-23 19:51:43,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-23 19:51:43,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-23 19:51:43,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-23 19:51:43,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-23 19:51:43,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-23 19:51:43,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-23 19:51:43,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-23 19:51:43,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-23 19:51:43,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-02-23 19:51:43,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-02-23 19:51:43,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-02-23 19:51:43,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-02-23 19:51:43,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-23 19:51:43,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2022-02-23 19:51:43,758 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-23 19:51:43,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-23 19:51:43,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-23 19:51:43,760 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-23 19:51:43,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-23 19:51:43,760 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-23 19:51:43,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-23 19:51:43,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-23 19:51:43,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-23 19:51:43,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-23 19:51:43,761 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-23 19:51:43,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-23 19:51:43,761 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-23 19:51:43,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-23 19:51:43,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-23 19:51:43,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-23 19:51:43,761 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-23 19:51:43,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-23 19:51:43,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 19:51:43,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-23 19:51:43,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-23 19:51:43,763 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-02-23 19:51:43,763 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-23 19:51:43,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-23 19:51:43,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-23 19:51:43,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-23 19:51:43,983 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-23 19:51:43,988 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-23 19:51:43,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_unwindbound1.c
[2022-02-23 19:51:44,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/542175f96/15a322354c8041159b47d82491f52543/FLAG7ea8565f0
[2022-02-23 19:51:44,406 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-23 19:51:44,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_unwindbound1.c
[2022-02-23 19:51:44,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/542175f96/15a322354c8041159b47d82491f52543/FLAG7ea8565f0
[2022-02-23 19:51:44,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/542175f96/15a322354c8041159b47d82491f52543
[2022-02-23 19:51:44,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-23 19:51:44,426 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-02-23 19:51:44,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-23 19:51:44,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-23 19:51:44,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-23 19:51:44,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178aac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44, skipping insertion in model container
[2022-02-23 19:51:44,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-23 19:51:44,452 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-23 19:51:44,593 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/sqrt1-ll_unwindbound1.c[520,533]
[2022-02-23 19:51:44,607 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-23 19:51:44,612 INFO L203 MainTranslator]: Completed pre-run
[2022-02-23 19:51:44,622 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/sqrt1-ll_unwindbound1.c[520,533]
[2022-02-23 19:51:44,627 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-23 19:51:44,637 INFO L208 MainTranslator]: Completed translation
[2022-02-23 19:51:44,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44 WrapperNode
[2022-02-23 19:51:44,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-23 19:51:44,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-23 19:51:44,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-23 19:51:44,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-23 19:51:44,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-23 19:51:44,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-23 19:51:44,672 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-23 19:51:44,672 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-23 19:51:44,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 19:51:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 19:51:44,707 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)
[2022-02-23 19:51:44,713 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
[2022-02-23 19:51:44,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-23 19:51:44,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-23 19:51:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-23 19:51:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-23 19:51:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-23 19:51:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-23 19:51:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-02-23 19:51:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-23 19:51:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-23 19:51:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-23 19:51:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-23 19:51:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-23 19:51:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-23 19:51:44,783 INFO L234 CfgBuilder]: Building ICFG
[2022-02-23 19:51:44,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-23 19:51:44,901 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-23 19:51:44,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-23 19:51:44,907 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-23 19:51:44,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:51:44 BoogieIcfgContainer
[2022-02-23 19:51:44,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-23 19:51:44,910 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-02-23 19:51:44,910 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-02-23 19:51:44,910 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-02-23 19:51:44,913 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:51:44" (1/1) ...
[2022-02-23 19:51:44,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:51:44 BasicIcfg
[2022-02-23 19:51:44,929 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-02-23 19:51:44,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-23 19:51:44,931 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-23 19:51:44,933 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-23 19:51:44,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:51:44" (1/4) ...
[2022-02-23 19:51:44,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b613be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:51:44, skipping insertion in model container
[2022-02-23 19:51:44,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:51:44" (2/4) ...
[2022-02-23 19:51:44,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b613be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:51:44, skipping insertion in model container
[2022-02-23 19:51:44,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:51:44" (3/4) ...
[2022-02-23 19:51:44,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b613be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:51:44, skipping insertion in model container
[2022-02-23 19:51:44,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:51:44" (4/4) ...
[2022-02-23 19:51:44,936 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound1.cJordan
[2022-02-23 19:51:44,940 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2022-02-23 19:51:44,940 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-23 19:51:44,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-23 19:51:44,981 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR
[2022-02-23 19:51:44,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-23 19:51:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-02-23 19:51:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-02-23 19:51:45,012 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 19:51:45,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:45,013 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 19:51:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 19:51:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1238828824, now seen corresponding path program 1 times
[2022-02-23 19:51:45,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 19:51:45,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413531286]
[2022-02-23 19:51:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:45,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 19:51:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:45,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 19:51:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 19:51:45,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 19:51:45,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413531286]
[2022-02-23 19:51:45,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413531286] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 19:51:45,250 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 19:51:45,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-23 19:51:45,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635401519]
[2022-02-23 19:51:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 19:51:45,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-23 19:51:45,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 19:51:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-23 19:51:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-23 19:51:45,293 INFO L87 Difference]: Start difference. First operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 19:51:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 19:51:45,373 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions.
[2022-02-23 19:51:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-23 19:51:45,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2022-02-23 19:51:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 19:51:45,392 INFO L225 Difference]: With dead ends: 27
[2022-02-23 19:51:45,392 INFO L226 Difference]: Without dead ends: 22
[2022-02-23 19:51:45,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-23 19:51:45,397 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 19:51:45,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 19:51:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-02-23 19:51:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2022-02-23 19:51:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-02-23 19:51:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions.
[2022-02-23 19:51:45,424 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 11
[2022-02-23 19:51:45,425 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 19:51:45,425 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions.
[2022-02-23 19:51:45,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 19:51:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions.
[2022-02-23 19:51:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-02-23 19:51:45,426 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 19:51:45,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:45,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-23 19:51:45,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 19:51:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 19:51:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash -221581531, now seen corresponding path program 1 times
[2022-02-23 19:51:45,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 19:51:45,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254109437]
[2022-02-23 19:51:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:45,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 19:51:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 19:51:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 19:51:45,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 19:51:45,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254109437]
[2022-02-23 19:51:45,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254109437] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 19:51:45,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 19:51:45,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-23 19:51:45,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503654059]
[2022-02-23 19:51:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 19:51:45,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 19:51:45,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 19:51:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 19:51:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 19:51:45,509 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 19:51:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 19:51:45,578 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions.
[2022-02-23 19:51:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-02-23 19:51:45,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-02-23 19:51:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 19:51:45,580 INFO L225 Difference]: With dead ends: 23
[2022-02-23 19:51:45,580 INFO L226 Difference]: Without dead ends: 23
[2022-02-23 19:51:45,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 19:51:45,581 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 19:51:45,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 19:51:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-02-23 19:51:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2022-02-23 19:51:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-02-23 19:51:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions.
[2022-02-23 19:51:45,588 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12
[2022-02-23 19:51:45,588 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 19:51:45,588 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions.
[2022-02-23 19:51:45,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 19:51:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions.
[2022-02-23 19:51:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-02-23 19:51:45,589 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 19:51:45,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:45,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-23 19:51:45,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 19:51:45,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 19:51:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash -220509055, now seen corresponding path program 1 times
[2022-02-23 19:51:45,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 19:51:45,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934441823]
[2022-02-23 19:51:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 19:51:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:45,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 19:51:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 19:51:45,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 19:51:45,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934441823]
[2022-02-23 19:51:45,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934441823] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 19:51:45,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 19:51:45,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-23 19:51:45,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510034460]
[2022-02-23 19:51:45,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 19:51:45,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-23 19:51:45,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 19:51:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-23 19:51:45,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-02-23 19:51:45,685 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 19:51:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 19:51:45,812 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions.
[2022-02-23 19:51:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-02-23 19:51:45,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-02-23 19:51:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 19:51:45,815 INFO L225 Difference]: With dead ends: 34
[2022-02-23 19:51:45,816 INFO L226 Difference]: Without dead ends: 34
[2022-02-23 19:51:45,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-02-23 19:51:45,817 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 19:51:45,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 65 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 19:51:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-02-23 19:51:45,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32.
[2022-02-23 19:51:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2022-02-23 19:51:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions.
[2022-02-23 19:51:45,827 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 12
[2022-02-23 19:51:45,827 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 19:51:45,828 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions.
[2022-02-23 19:51:45,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 19:51:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions.
[2022-02-23 19:51:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-23 19:51:45,829 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 19:51:45,829 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:45,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-23 19:51:45,829 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 19:51:45,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 19:51:45,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1748396925, now seen corresponding path program 1 times
[2022-02-23 19:51:45,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 19:51:45,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844903173]
[2022-02-23 19:51:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 19:51:45,843 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 19:51:45,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694647938]
[2022-02-23 19:51:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:45,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:45,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 19:51:45,859 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)
[2022-02-23 19:51:45,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-23 19:51:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:45,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-23 19:51:45,909 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 19:51:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 19:51:46,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 19:51:46,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 19:51:46,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844903173]
[2022-02-23 19:51:46,009 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 19:51:46,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694647938]
[2022-02-23 19:51:46,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694647938] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 19:51:46,010 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 19:51:46,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 19:51:46,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359452641]
[2022-02-23 19:51:46,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 19:51:46,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 19:51:46,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 19:51:46,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 19:51:46,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 19:51:46,012 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-02-23 19:51:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 19:51:46,043 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions.
[2022-02-23 19:51:46,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-23 19:51:46,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17
[2022-02-23 19:51:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 19:51:46,045 INFO L225 Difference]: With dead ends: 38
[2022-02-23 19:51:46,045 INFO L226 Difference]: Without dead ends: 38
[2022-02-23 19:51:46,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 19:51:46,047 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 19:51:46,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 100 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 19:51:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-02-23 19:51:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37.
[2022-02-23 19:51:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11)
[2022-02-23 19:51:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions.
[2022-02-23 19:51:46,053 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 17
[2022-02-23 19:51:46,054 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 19:51:46,054 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions.
[2022-02-23 19:51:46,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-02-23 19:51:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions.
[2022-02-23 19:51:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-23 19:51:46,055 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 19:51:46,055 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:46,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-02-23 19:51:46,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:46,275 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 19:51:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 19:51:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -214718627, now seen corresponding path program 1 times
[2022-02-23 19:51:46,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 19:51:46,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784385845]
[2022-02-23 19:51:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 19:51:46,291 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 19:51:46,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113168967]
[2022-02-23 19:51:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:46,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:46,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 19:51:46,302 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)
[2022-02-23 19:51:46,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-23 19:51:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:46,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-23 19:51:46,339 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 19:51:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-23 19:51:46,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 19:51:46,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 19:51:46,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784385845]
[2022-02-23 19:51:46,407 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 19:51:46,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113168967]
[2022-02-23 19:51:46,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113168967] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 19:51:46,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 19:51:46,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 19:51:46,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914745494]
[2022-02-23 19:51:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 19:51:46,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 19:51:46,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 19:51:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 19:51:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 19:51:46,409 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-23 19:51:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 19:51:46,437 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions.
[2022-02-23 19:51:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-23 19:51:46,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22
[2022-02-23 19:51:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 19:51:46,439 INFO L225 Difference]: With dead ends: 42
[2022-02-23 19:51:46,439 INFO L226 Difference]: Without dead ends: 39
[2022-02-23 19:51:46,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 19:51:46,440 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 19:51:46,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 19:51:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2022-02-23 19:51:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2022-02-23 19:51:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-02-23 19:51:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions.
[2022-02-23 19:51:46,446 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 22
[2022-02-23 19:51:46,447 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 19:51:46,447 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions.
[2022-02-23 19:51:46,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-23 19:51:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions.
[2022-02-23 19:51:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-02-23 19:51:46,448 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 19:51:46,448 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:46,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-02-23 19:51:46,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:46,676 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 19:51:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 19:51:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1697115236, now seen corresponding path program 1 times
[2022-02-23 19:51:46,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 19:51:46,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793188162]
[2022-02-23 19:51:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:46,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 19:51:46,694 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 19:51:46,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641748111]
[2022-02-23 19:51:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:46,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:46,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 19:51:46,699 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)
[2022-02-23 19:51:46,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-23 19:51:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:46,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-02-23 19:51:46,756 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 19:51:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-02-23 19:51:46,923 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 19:51:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2022-02-23 19:51:47,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 19:51:47,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793188162]
[2022-02-23 19:51:47,033 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 19:51:47,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641748111]
[2022-02-23 19:51:47,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641748111] provided 1 perfect and 1 imperfect interpolant sequences
[2022-02-23 19:51:47,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-02-23 19:51:47,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7
[2022-02-23 19:51:47,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059150188]
[2022-02-23 19:51:47,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 19:51:47,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 19:51:47,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 19:51:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 19:51:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-02-23 19:51:47,035 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-02-23 19:51:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 19:51:47,075 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions.
[2022-02-23 19:51:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-23 19:51:47,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30
[2022-02-23 19:51:47,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 19:51:47,077 INFO L225 Difference]: With dead ends: 43
[2022-02-23 19:51:47,077 INFO L226 Difference]: Without dead ends: 43
[2022-02-23 19:51:47,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-02-23 19:51:47,080 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 19:51:47,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 74 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 19:51:47,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-02-23 19:51:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2022-02-23 19:51:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-02-23 19:51:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions.
[2022-02-23 19:51:47,098 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 30
[2022-02-23 19:51:47,098 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 19:51:47,098 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions.
[2022-02-23 19:51:47,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-02-23 19:51:47,098 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions.
[2022-02-23 19:51:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-02-23 19:51:47,099 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 19:51:47,099 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:47,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-23 19:51:47,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:47,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 19:51:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 19:51:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1534643651, now seen corresponding path program 1 times
[2022-02-23 19:51:47,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 19:51:47,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059833079]
[2022-02-23 19:51:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 19:51:47,311 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 19:51:47,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355800222]
[2022-02-23 19:51:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 19:51:47,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 19:51:47,319 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)
[2022-02-23 19:51:47,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-23 19:51:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 19:51:47,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-02-23 19:51:47,362 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 19:51:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-02-23 19:51:47,495 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 19:51:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-02-23 19:51:47,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 19:51:47,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059833079]
[2022-02-23 19:51:47,602 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 19:51:47,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355800222]
[2022-02-23 19:51:47,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355800222] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 19:51:47,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 19:51:47,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2022-02-23 19:51:47,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886619916]
[2022-02-23 19:51:47,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 19:51:47,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-23 19:51:47,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 19:51:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-23 19:51:47,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-02-23 19:51:47,607 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9)
[2022-02-23 19:51:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 19:51:47,741 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions.
[2022-02-23 19:51:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-23 19:51:47,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 35
[2022-02-23 19:51:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 19:51:47,745 INFO L225 Difference]: With dead ends: 50
[2022-02-23 19:51:47,745 INFO L226 Difference]: Without dead ends: 0
[2022-02-23 19:51:47,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2022-02-23 19:51:47,746 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 19:51:47,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 118 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 19:51:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-02-23 19:51:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-02-23 19:51:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-23 19:51:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-02-23 19:51:47,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35
[2022-02-23 19:51:47,748 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 19:51:47,748 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-02-23 19:51:47,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9)
[2022-02-23 19:51:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-02-23 19:51:47,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-02-23 19:51:47,750 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-23 19:51:47,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-02-23 19:51:47,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 19:51:47,954 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1]
[2022-02-23 19:51:47,955 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-23 19:51:47,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:51:47 BasicIcfg
[2022-02-23 19:51:47,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-23 19:51:47,958 INFO L158 Benchmark]: Toolchain (without parser) took 3532.22ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 130.2MB in the beginning and 135.5MB in the end (delta: -5.4MB). Peak memory consumption was 48.5MB. Max. memory is 8.0GB.
[2022-02-23 19:51:47,958 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-23 19:51:47,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.96ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 130.0MB in the beginning and 209.1MB in the end (delta: -79.2MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB.
[2022-02-23 19:51:47,959 INFO L158 Benchmark]: Boogie Preprocessor took 31.84ms. Allocated memory is still 238.0MB. Free memory was 209.1MB in the beginning and 207.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-23 19:51:47,959 INFO L158 Benchmark]: RCFGBuilder took 237.44ms. Allocated memory is still 238.0MB. Free memory was 207.5MB in the beginning and 197.6MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
[2022-02-23 19:51:47,959 INFO L158 Benchmark]: IcfgTransformer took 19.48ms. Allocated memory is still 238.0MB. Free memory was 197.6MB in the beginning and 196.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-23 19:51:47,959 INFO L158 Benchmark]: TraceAbstraction took 3026.94ms. Allocated memory is still 238.0MB. Free memory was 196.0MB in the beginning and 135.5MB in the end (delta: 60.5MB). Peak memory consumption was 61.5MB. Max. memory is 8.0GB.
[2022-02-23 19:51:47,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 206.96ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 130.0MB in the beginning and 209.1MB in the end (delta: -79.2MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 31.84ms. Allocated memory is still 238.0MB. Free memory was 209.1MB in the beginning and 207.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 237.44ms. Allocated memory is still 238.0MB. Free memory was 207.5MB in the beginning and 197.6MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
* IcfgTransformer took 19.48ms. Allocated memory is still 238.0MB. Free memory was 197.6MB in the beginning and 196.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 3026.94ms. Allocated memory is still 238.0MB. Free memory was 196.0MB in the beginning and 135.5MB in the end (delta: 60.5MB). Peak memory consumption was 61.5MB. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 14]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 550 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 364 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 285 IncrementalHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 186 mSDtfsCounter, 285 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 154 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 39, 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, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 5 NumberOfNonLiveVariables, 398 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 112/118 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2022-02-23 19:51:47,995 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...