/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_LAZY.epf -i ../../../trunk/examples/svcomp/bitvector/modulus-2.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 14:18:15,922 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 14:18:15,924 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 14:18:15,991 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 14:18:15,991 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 14:18:15,993 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 14:18:15,995 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 14:18:15,997 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 14:18:15,998 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 14:18:16,001 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 14:18:16,002 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 14:18:16,003 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 14:18:16,003 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 14:18:16,005 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 14:18:16,006 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 14:18:16,008 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 14:18:16,008 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 14:18:16,009 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 14:18:16,010 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 14:18:16,014 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 14:18:16,015 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 14:18:16,016 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 14:18:16,017 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 14:18:16,017 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 14:18:16,022 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 14:18:16,022 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 14:18:16,022 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 14:18:16,023 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 14:18:16,024 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 14:18:16,024 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 14:18:16,024 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 14:18:16,025 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 14:18:16,026 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 14:18:16,026 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 14:18:16,027 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 14:18:16,027 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 14:18:16,028 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 14:18:16,028 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 14:18:16,028 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 14:18:16,029 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 14:18:16,029 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 14:18:16,030 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf
[2022-01-10 14:18:16,052 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 14:18:16,053 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 14:18:16,053 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 14:18:16,053 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 14:18:16,054 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 14:18:16,054 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 14:18:16,054 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 14:18:16,054 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 14:18:16,054 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 14:18:16,055 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 14:18:16,055 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 14:18:16,055 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 14:18:16,055 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 14:18:16,056 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 14:18:16,056 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 14:18:16,057 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 14:18:16,057 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 14:18:16,058 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 14:18:16,058 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 14:18:16,058 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_LAZY
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 14:18:16,253 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 14:18:16,281 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 14:18:16,282 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 14:18:16,283 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 14:18:16,284 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 14:18:16,284 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/modulus-2.i
[2022-01-10 14:18:16,325 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92608d8e/c31f9576ab764798878ec3afcff390b2/FLAG69da8f314
[2022-01-10 14:18:16,629 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 14:18:16,629 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/modulus-2.i
[2022-01-10 14:18:16,638 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92608d8e/c31f9576ab764798878ec3afcff390b2/FLAG69da8f314
[2022-01-10 14:18:17,083 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92608d8e/c31f9576ab764798878ec3afcff390b2
[2022-01-10 14:18:17,085 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 14:18:17,086 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 14:18:17,088 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 14:18:17,088 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 14:18:17,091 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 14:18:17,091 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,092 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b65091b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17, skipping insertion in model container
[2022-01-10 14:18:17,092 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,097 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 14:18:17,110 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 14:18:17,269 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/modulus-2.i[1252,1265]
[2022-01-10 14:18:17,283 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 14:18:17,291 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 14:18:17,300 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/modulus-2.i[1252,1265]
[2022-01-10 14:18:17,313 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 14:18:17,324 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 14:18:17,325 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17 WrapperNode
[2022-01-10 14:18:17,325 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 14:18:17,325 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 14:18:17,325 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 14:18:17,326 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 14:18:17,330 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,336 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,351 INFO  L137                Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45
[2022-01-10 14:18:17,351 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 14:18:17,352 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 14:18:17,352 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 14:18:17,352 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 14:18:17,357 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,357 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,365 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,365 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,376 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,378 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,379 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,380 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 14:18:17,380 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 14:18:17,380 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 14:18:17,381 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 14:18:17,384 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,388 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 14:18:17,395 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:18:17,418 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 14:18:17,424 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 14:18:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 14:18:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 14:18:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 14:18:17,447 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 14:18:17,506 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 14:18:17,507 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 14:18:17,619 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 14:18:17,623 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 14:18:17,623 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-10 14:18:17,624 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:17 BoogieIcfgContainer
[2022-01-10 14:18:17,624 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 14:18:17,624 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 14:18:17,625 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 14:18:17,625 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 14:18:17,631 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:17" (1/1) ...
[2022-01-10 14:18:17,674 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:18:17 BasicIcfg
[2022-01-10 14:18:17,675 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 14:18:17,690 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 14:18:17,690 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 14:18:17,692 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 14:18:17,707 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:18:17" (1/4) ...
[2022-01-10 14:18:17,708 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f41a3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:18:17, skipping insertion in model container
[2022-01-10 14:18:17,708 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:17" (2/4) ...
[2022-01-10 14:18:17,708 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f41a3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:18:17, skipping insertion in model container
[2022-01-10 14:18:17,708 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:17" (3/4) ...
[2022-01-10 14:18:17,708 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f41a3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:18:17, skipping insertion in model container
[2022-01-10 14:18:17,708 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:18:17" (4/4) ...
[2022-01-10 14:18:17,709 INFO  L111   eAbstractionObserver]: Analyzing ICFG modulus-2.iTransformedIcfg
[2022-01-10 14:18:17,712 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 14:18:17,712 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 14:18:17,754 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 14:18:17,764 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 14:18:17,764 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 14:18:17,772 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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 14:18:17,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 14:18:17,776 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:18:17,776 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:18:17,776 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:18:17,780 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:18:17,780 INFO  L85        PathProgramCache]: Analyzing trace with hash 1955070446, now seen corresponding path program 1 times
[2022-01-10 14:18:17,785 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:18:17,785 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800492243]
[2022-01-10 14:18:17,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:17,786 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:18:17,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:18:17,900 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 14:18:17,901 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:18:17,901 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800492243]
[2022-01-10 14:18:17,901 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800492243] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:18:17,902 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:18:17,902 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 14:18:17,903 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291199237]
[2022-01-10 14:18:17,903 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:18:17,906 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 14:18:17,906 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:18:17,922 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 14:18:17,922 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 14:18:17,924 INFO  L87              Difference]: Start difference. First operand  has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 14:18:17,932 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:18:17,932 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2022-01-10 14:18:17,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 14:18:17,937 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10
[2022-01-10 14:18:17,937 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:18:17,942 INFO  L225             Difference]: With dead ends: 33
[2022-01-10 14:18:17,942 INFO  L226             Difference]: Without dead ends: 13
[2022-01-10 14:18:17,944 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 14:18:17,947 INFO  L933         BasicCegarLoop]: 21 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, 21 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 14:18:17,947 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:18:17,957 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2022-01-10 14:18:17,964 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2022-01-10 14:18:17,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 14:18:17,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions.
[2022-01-10 14:18:17,965 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10
[2022-01-10 14:18:17,966 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:18:17,966 INFO  L470      AbstractCegarLoop]: Abstraction has 13 states and 15 transitions.
[2022-01-10 14:18:17,966 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 14:18:17,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions.
[2022-01-10 14:18:17,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 14:18:17,966 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:18:17,966 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:18:17,967 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 14:18:17,967 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:18:17,970 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:18:17,970 INFO  L85        PathProgramCache]: Analyzing trace with hash -596162994, now seen corresponding path program 1 times
[2022-01-10 14:18:17,970 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:18:17,970 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115896521]
[2022-01-10 14:18:17,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:17,971 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:18:18,035 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 14:18:18,035 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801817621]
[2022-01-10 14:18:18,035 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:18,036 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:18:18,036 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:18:18,037 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 14:18:18,038 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 14:18:18,091 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:18:18,093 INFO  L263         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-01-10 14:18:18,095 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:18:18,231 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 14:18:18,231 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 14:18:18,231 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:18:18,231 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115896521]
[2022-01-10 14:18:18,232 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 14:18:18,232 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801817621]
[2022-01-10 14:18:18,232 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [801817621] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:18:18,232 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:18:18,232 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-10 14:18:18,233 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530726750]
[2022-01-10 14:18:18,233 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:18:18,233 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 14:18:18,233 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:18:18,234 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 14:18:18,234 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-01-10 14:18:18,234 INFO  L87              Difference]: Start difference. First operand 13 states and 15 transitions. Second operand  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 14:18:18,286 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:18:18,286 INFO  L93              Difference]: Finished difference Result 23 states and 25 transitions.
[2022-01-10 14:18:18,286 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 14:18:18,287 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10
[2022-01-10 14:18:18,287 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:18:18,287 INFO  L225             Difference]: With dead ends: 23
[2022-01-10 14:18:18,287 INFO  L226             Difference]: Without dead ends: 19
[2022-01-10 14:18:18,288 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2022-01-10 14:18:18,289 INFO  L933         BasicCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 14:18:18,291 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 23 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:18:18,293 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-01-10 14:18:18,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15.
[2022-01-10 14:18:18,300 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 14:18:18,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions.
[2022-01-10 14:18:18,301 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10
[2022-01-10 14:18:18,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:18:18,301 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 18 transitions.
[2022-01-10 14:18:18,301 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 14:18:18,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions.
[2022-01-10 14:18:18,302 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 14:18:18,302 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:18:18,302 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:18:18,319 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 14:18:18,519 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 14:18:18,520 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:18:18,520 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:18:18,520 INFO  L85        PathProgramCache]: Analyzing trace with hash -596133203, now seen corresponding path program 1 times
[2022-01-10 14:18:18,521 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:18:18,521 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359052342]
[2022-01-10 14:18:18,521 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:18,521 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:18:18,547 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 14:18:18,548 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609354143]
[2022-01-10 14:18:18,548 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:18,548 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:18:18,548 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:18:18,549 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 14:18:18,550 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 14:18:18,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:18:18,594 INFO  L263         TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 14:18:18,595 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:18:18,809 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 14:18:18,809 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 14:18:18,809 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:18:18,810 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359052342]
[2022-01-10 14:18:18,810 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 14:18:18,810 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609354143]
[2022-01-10 14:18:18,810 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [609354143] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:18:18,810 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:18:18,810 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-10 14:18:18,811 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798512739]
[2022-01-10 14:18:18,811 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:18:18,811 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 14:18:18,811 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:18:18,812 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 14:18:18,812 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-10 14:18:18,812 INFO  L87              Difference]: Start difference. First operand 15 states and 18 transitions. Second operand  has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 14:18:18,862 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:18:18,862 INFO  L93              Difference]: Finished difference Result 19 states and 21 transitions.
[2022-01-10 14:18:18,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-01-10 14:18:18,862 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 10
[2022-01-10 14:18:18,862 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:18:18,864 INFO  L225             Difference]: With dead ends: 19
[2022-01-10 14:18:18,864 INFO  L226             Difference]: Without dead ends: 14
[2022-01-10 14:18:18,865 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 14:18:18,867 INFO  L933         BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 14:18:18,868 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:18:18,870 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-10 14:18:18,873 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-10 14:18:18,873 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 14:18:18,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2022-01-10 14:18:18,874 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10
[2022-01-10 14:18:18,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:18:18,874 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2022-01-10 14:18:18,874 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 14:18:18,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2022-01-10 14:18:18,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 14:18:18,874 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:18:18,874 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:18:18,892 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 14:18:19,087 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 14:18:19,088 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:18:19,088 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:18:19,088 INFO  L85        PathProgramCache]: Analyzing trace with hash -474332476, now seen corresponding path program 1 times
[2022-01-10 14:18:19,089 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:18:19,089 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226684722]
[2022-01-10 14:18:19,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:19,089 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:18:19,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:18:19,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:18:19,170 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:18:19,172 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226684722]
[2022-01-10 14:18:19,174 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226684722] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:18:19,174 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:18:19,174 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 14:18:19,174 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392743804]
[2022-01-10 14:18:19,174 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:18:19,175 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 14:18:19,175 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:18:19,175 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 14:18:19,175 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 14:18:19,175 INFO  L87              Difference]: Start difference. First operand 14 states and 16 transitions. Second operand  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14:18:19,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:18:19,204 INFO  L93              Difference]: Finished difference Result 23 states and 28 transitions.
[2022-01-10 14:18:19,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 14:18:19,204 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14:18:19,205 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:18:19,206 INFO  L225             Difference]: With dead ends: 23
[2022-01-10 14:18:19,206 INFO  L226             Difference]: Without dead ends: 15
[2022-01-10 14:18:19,206 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 14:18:19,208 INFO  L933         BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 14:18:19,209 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:18:19,210 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-01-10 14:18:19,212 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2022-01-10 14:18:19,212 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 14:18:19,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions.
[2022-01-10 14:18:19,212 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13
[2022-01-10 14:18:19,212 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:18:19,212 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 17 transitions.
[2022-01-10 14:18:19,213 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14:18:19,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions.
[2022-01-10 14:18:19,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 14:18:19,213 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:18:19,213 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:18:19,213 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-10 14:18:19,213 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:18:19,214 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:18:19,214 INFO  L85        PathProgramCache]: Analyzing trace with hash 951697380, now seen corresponding path program 1 times
[2022-01-10 14:18:19,214 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:18:19,214 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142255764]
[2022-01-10 14:18:19,214 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:19,214 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:18:19,278 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 14:18:19,278 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273797115]
[2022-01-10 14:18:19,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:18:19,278 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:18:19,279 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:18:19,282 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 14:18:19,284 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 14:18:19,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:18:19,361 INFO  L263         TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-10 14:18:19,362 INFO  L286         TraceCheckSpWp]: Computing forward predicates...