/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound50.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 21:00:33,740 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 21:00:33,742 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 21:00:33,786 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 21:00:33,786 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 21:00:33,788 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 21:00:33,790 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 21:00:33,792 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 21:00:33,794 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 21:00:33,797 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 21:00:33,797 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 21:00:33,798 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 21:00:33,799 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 21:00:33,800 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 21:00:33,801 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 21:00:33,803 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 21:00:33,803 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 21:00:33,804 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 21:00:33,805 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 21:00:33,809 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 21:00:33,810 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 21:00:33,811 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 21:00:33,812 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 21:00:33,812 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 21:00:33,817 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 21:00:33,817 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 21:00:33,818 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 21:00:33,819 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 21:00:33,819 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 21:00:33,819 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 21:00:33,820 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 21:00:33,820 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 21:00:33,821 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 21:00:33,822 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 21:00:33,822 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 21:00:33,823 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 21:00:33,823 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 21:00:33,823 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 21:00:33,823 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 21:00:33,824 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 21:00:33,824 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 21:00:33,825 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 21:00:33,838 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 21:00:33,838 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 21:00:33,838 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 21:00:33,838 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 21:00:33,839 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 21:00:33,839 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 21:00:33,839 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 21:00:33,839 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 21:00:33,839 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 21:00:33,840 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 21:00:33,840 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:00:33,841 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 21:00:33,841 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 21:00:33,842 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 21:00:33,842 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 21:00:34,032 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 21:00:34,044 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 21:00:34,046 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 21:00:34,046 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 21:00:34,047 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 21:00:34,048 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound50.c
[2022-01-10 21:00:34,095 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68fb4fcf4/afe01f97afdb4b548c75ddbbb2e190d8/FLAGf80854799
[2022-01-10 21:00:34,463 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 21:00:34,463 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound50.c
[2022-01-10 21:00:34,467 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68fb4fcf4/afe01f97afdb4b548c75ddbbb2e190d8/FLAGf80854799
[2022-01-10 21:00:34,475 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68fb4fcf4/afe01f97afdb4b548c75ddbbb2e190d8
[2022-01-10 21:00:34,477 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 21:00:34,477 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 21:00:34,478 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 21:00:34,478 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 21:00:34,481 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 21:00:34,481 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,482 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5940ce88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34, skipping insertion in model container
[2022-01-10 21:00:34,482 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,486 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 21:00:34,497 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 21:00:34,604 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/ps5-ll_valuebound50.c[458,471]
[2022-01-10 21:00:34,614 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:00:34,620 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 21:00:34,628 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/ps5-ll_valuebound50.c[458,471]
[2022-01-10 21:00:34,633 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:00:34,642 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 21:00:34,642 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34 WrapperNode
[2022-01-10 21:00:34,642 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 21:00:34,643 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 21:00:34,643 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 21:00:34,643 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 21:00:34,647 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,652 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,664 INFO  L137                Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 56
[2022-01-10 21:00:34,664 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 21:00:34,665 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 21:00:34,665 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 21:00:34,665 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 21:00:34,670 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,670 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,671 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,671 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,674 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,676 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,677 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,678 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 21:00:34,679 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 21:00:34,679 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 21:00:34,679 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 21:00:34,680 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (1/1) ...
[2022-01-10 21:00:34,685 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:00:34,691 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:34,701 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)
[2022-01-10 21:00:34,711 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
[2022-01-10 21:00:34,723 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 21:00:34,723 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 21:00:34,724 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 21:00:34,724 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 21:00:34,761 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 21:00:34,762 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 21:00:35,657 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 21:00:35,661 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 21:00:35,661 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 21:00:35,662 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:00:35 BoogieIcfgContainer
[2022-01-10 21:00:35,662 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 21:00:35,662 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 21:00:35,663 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 21:00:35,668 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 21:00:35,670 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:00:35" (1/1) ...
[2022-01-10 21:00:35,759 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:00:35 BasicIcfg
[2022-01-10 21:00:35,759 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 21:00:35,760 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 21:00:35,760 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 21:00:35,762 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 21:00:35,762 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:00:34" (1/4) ...
[2022-01-10 21:00:35,763 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbf22c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:00:35, skipping insertion in model container
[2022-01-10 21:00:35,763 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:34" (2/4) ...
[2022-01-10 21:00:35,763 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbf22c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:00:35, skipping insertion in model container
[2022-01-10 21:00:35,763 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:00:35" (3/4) ...
[2022-01-10 21:00:35,763 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbf22c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:00:35, skipping insertion in model container
[2022-01-10 21:00:35,764 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:00:35" (4/4) ...
[2022-01-10 21:00:35,764 INFO  L111   eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound50.cTransformedIcfg
[2022-01-10 21:00:35,767 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 21:00:35,767 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2022-01-10 21:00:35,795 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 21:00:35,801 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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
[2022-01-10 21:00:35,801 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-01-10 21:00:35,818 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 20 states have (on average 1.55) internal successors, (31), 23 states have internal predecessors, (31), 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)
[2022-01-10 21:00:35,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 21:00:35,826 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:35,827 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:35,827 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:35,838 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:35,839 INFO  L85        PathProgramCache]: Analyzing trace with hash -460398865, now seen corresponding path program 1 times
[2022-01-10 21:00:35,847 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:35,848 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38583713]
[2022-01-10 21:00:35,848 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:35,849 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:35,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:35,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:00:35,968 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:00:35,969 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38583713]
[2022-01-10 21:00:35,971 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38583713] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:00:35,971 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:00:35,971 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 21:00:35,973 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333383692]
[2022-01-10 21:00:35,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:00:35,978 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 21:00:35,978 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:00:35,999 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 21:00:35,999 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:00:36,001 INFO  L87              Difference]: Start difference. First operand  has 24 states, 20 states have (on average 1.55) internal successors, (31), 23 states have internal predecessors, (31), 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) Second operand  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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)
[2022-01-10 21:00:36,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:00:36,012 INFO  L93              Difference]: Finished difference Result 45 states and 58 transitions.
[2022-01-10 21:00:36,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 21:00:36,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9
[2022-01-10 21:00:36,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:00:36,019 INFO  L225             Difference]: With dead ends: 45
[2022-01-10 21:00:36,019 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 21:00:36,021 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:00:36,023 INFO  L933         BasicCegarLoop]: 24 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, 24 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
[2022-01-10 21:00:36,024 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 21:00:36,033 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 21:00:36,040 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-10 21:00:36,041 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 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)
[2022-01-10 21:00:36,041 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2022-01-10 21:00:36,042 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9
[2022-01-10 21:00:36,042 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:00:36,042 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2022-01-10 21:00:36,042 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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)
[2022-01-10 21:00:36,043 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2022-01-10 21:00:36,043 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 21:00:36,043 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:36,043 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:36,043 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 21:00:36,043 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:36,044 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:36,044 INFO  L85        PathProgramCache]: Analyzing trace with hash 428028337, now seen corresponding path program 1 times
[2022-01-10 21:00:36,044 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:36,044 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699309021]
[2022-01-10 21:00:36,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:36,045 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:36,065 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:00:36,065 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135955971]
[2022-01-10 21:00:36,065 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:36,065 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:36,065 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:36,071 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)
[2022-01-10 21:00:36,071 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 21:00:36,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:36,149 INFO  L263         TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 21:00:36,153 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:00:36,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:00:36,251 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 21:00:36,251 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:00:36,252 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699309021]
[2022-01-10 21:00:36,252 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:00:36,252 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135955971]
[2022-01-10 21:00:36,252 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [135955971] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:00:36,253 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:00:36,253 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 21:00:36,253 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697336540]
[2022-01-10 21:00:36,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:00:36,254 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 21:00:36,254 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:00:36,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 21:00:36,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 21:00:36,255 INFO  L87              Difference]: Start difference. First operand 20 states and 20 transitions. Second operand  has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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)
[2022-01-10 21:00:38,388 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 21:00:38,568 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:00:38,568 INFO  L93              Difference]: Finished difference Result 34 states and 34 transitions.
[2022-01-10 21:00:38,568 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 21:00:38,569 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9
[2022-01-10 21:00:38,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:00:38,569 INFO  L225             Difference]: With dead ends: 34
[2022-01-10 21:00:38,569 INFO  L226             Difference]: Without dead ends: 24
[2022-01-10 21:00:38,569 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 21:00:38,570 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2022-01-10 21:00:38,571 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 38 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time]
[2022-01-10 21:00:38,571 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-10 21:00:38,573 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2022-01-10 21:00:38,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 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)
[2022-01-10 21:00:38,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2022-01-10 21:00:38,574 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9
[2022-01-10 21:00:38,574 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:00:38,574 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2022-01-10 21:00:38,574 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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)
[2022-01-10 21:00:38,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2022-01-10 21:00:38,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 21:00:38,575 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:38,575 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:38,583 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 21:00:38,775 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:38,776 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:38,776 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:38,777 INFO  L85        PathProgramCache]: Analyzing trace with hash 1581116969, now seen corresponding path program 1 times
[2022-01-10 21:00:38,777 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:38,777 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574089614]
[2022-01-10 21:00:38,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:38,777 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:38,797 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:00:38,798 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572001259]
[2022-01-10 21:00:38,798 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:38,798 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:38,798 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:38,810 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)
[2022-01-10 21:00:38,817 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 21:00:39,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:39,165 INFO  L263         TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core
[2022-01-10 21:00:39,167 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:00:39,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:00:39,326 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:00:40,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 21:00:40,838 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:00:40,838 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574089614]
[2022-01-10 21:00:40,838 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:00:40,838 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572001259]
[2022-01-10 21:00:40,838 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [572001259] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:00:40,838 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 21:00:40,838 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6
[2022-01-10 21:00:40,838 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886507429]
[2022-01-10 21:00:40,839 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:00:40,839 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 21:00:40,839 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:00:40,839 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 21:00:40,839 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-01-10 21:00:40,840 INFO  L87              Difference]: Start difference. First operand 24 states and 24 transitions. Second operand  has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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)
[2022-01-10 21:00:42,850 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 21:00:46,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:00:46,068 INFO  L93              Difference]: Finished difference Result 34 states and 36 transitions.
[2022-01-10 21:00:46,069 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-10 21:00:46,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) Word has length 13
[2022-01-10 21:00:46,069 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:00:46,070 INFO  L225             Difference]: With dead ends: 34
[2022-01-10 21:00:46,070 INFO  L226             Difference]: Without dead ends: 30
[2022-01-10 21:00:46,070 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72
[2022-01-10 21:00:46,071 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2022-01-10 21:00:46,072 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 38 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time]
[2022-01-10 21:00:46,073 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-01-10 21:00:46,077 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20.
[2022-01-10 21:00:46,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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)
[2022-01-10 21:00:46,077 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2022-01-10 21:00:46,078 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13
[2022-01-10 21:00:46,078 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:00:46,078 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2022-01-10 21:00:46,078 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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)
[2022-01-10 21:00:46,078 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2022-01-10 21:00:46,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 21:00:46,078 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:46,078 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:46,084 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 21:00:46,283 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-01-10 21:00:46,283 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:46,284 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:46,284 INFO  L85        PathProgramCache]: Analyzing trace with hash -176208633, now seen corresponding path program 1 times
[2022-01-10 21:00:46,284 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:46,284 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792037456]
[2022-01-10 21:00:46,284 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:46,284 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:46,310 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:00:46,310 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211150965]
[2022-01-10 21:00:46,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:46,310 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:46,311 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:46,314 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)
[2022-01-10 21:00:46,315 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 21:00:47,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:47,120 INFO  L263         TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-01-10 21:00:47,124 INFO  L286         TraceCheckSpWp]: Computing forward predicates...