/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_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound20.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 09:19:10,956 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 09:19:10,958 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 09:19:11,024 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 09:19:11,025 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 09:19:11,026 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 09:19:11,027 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 09:19:11,028 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 09:19:11,030 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 09:19:11,030 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 09:19:11,032 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 09:19:11,033 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 09:19:11,034 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 09:19:11,035 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 09:19:11,036 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 09:19:11,038 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 09:19:11,041 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 09:19:11,043 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 09:19:11,045 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 09:19:11,046 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 09:19:11,046 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 09:19:11,047 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 09:19:11,049 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 09:19:11,049 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 09:19:11,050 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 09:19:11,050 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 09:19:11,051 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 09:19:11,051 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 09:19:11,051 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 09:19:11,052 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 09:19:11,053 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 09:19:11,053 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 09:19:11,054 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 09:19:11,054 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 09:19:11,055 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 09:19:11,055 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 09:19:11,055 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 09:19:11,056 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 09:19:11,056 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 09:19:11,057 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf
[2022-01-10 09:19:11,075 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 09:19:11,075 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 09:19:11,075 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 09:19:11,076 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 09:19:11,077 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 09:19:11,077 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 09:19:11,077 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 09:19:11,077 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 09:19:11,077 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 09:19:11,078 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 09:19:11,078 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 09:19:11,078 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 09:19:11,078 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 09:19:11,078 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 09:19:11,078 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 09:19:11,079 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 09:19:11,079 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 09:19:11,079 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 09:19:11,079 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 09:19:11,079 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 09:19:11,080 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 09:19:11,080 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:19:11,080 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 09:19:11,080 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 09:19:11,080 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 09:19:11,080 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 09:19:11,081 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 09:19:11,081 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 09:19:11,081 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 09:19:11,081 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 09:19:11,081 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 09:19:11,081 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 09:19:11,082 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 09:19:11,083 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_BITWISE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 09:19:11,295 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 09:19:11,319 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 09:19:11,322 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 09:19:11,323 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 09:19:11,324 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 09:19:11,325 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound20.c
[2022-01-10 09:19:11,379 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c30e0e65/d774aae04ad34dedb1ac8fa77e307238/FLAG4127f0e2c
[2022-01-10 09:19:11,781 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 09:19:11,781 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound20.c
[2022-01-10 09:19:11,797 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c30e0e65/d774aae04ad34dedb1ac8fa77e307238/FLAG4127f0e2c
[2022-01-10 09:19:12,188 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c30e0e65/d774aae04ad34dedb1ac8fa77e307238
[2022-01-10 09:19:12,192 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 09:19:12,193 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 09:19:12,196 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 09:19:12,196 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 09:19:12,198 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 09:19:12,199 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,200 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c607375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12, skipping insertion in model container
[2022-01-10 09:19:12,200 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,205 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 09:19:12,215 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 09:19:12,387 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/ps4-ll_unwindbound20.c[458,471]
[2022-01-10 09:19:12,418 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:19:12,428 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 09:19:12,440 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/ps4-ll_unwindbound20.c[458,471]
[2022-01-10 09:19:12,460 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:19:12,472 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 09:19:12,473 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12 WrapperNode
[2022-01-10 09:19:12,473 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 09:19:12,474 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 09:19:12,474 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 09:19:12,474 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 09:19:12,480 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,488 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,506 INFO  L137                Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53
[2022-01-10 09:19:12,506 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 09:19:12,507 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 09:19:12,507 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 09:19:12,507 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 09:19:12,514 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,514 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,524 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,524 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,537 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,540 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,541 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,542 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 09:19:12,543 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 09:19:12,543 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 09:19:12,543 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 09:19:12,545 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (1/1) ...
[2022-01-10 09:19:12,550 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:19:12,559 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:19:12,571 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 09:19:12,585 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 09:19:12,615 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 09:19:12,615 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 09:19:12,615 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 09:19:12,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 09:19:12,671 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 09:19:12,673 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 09:19:13,674 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 09:19:13,678 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 09:19:13,678 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 09:19:13,679 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:19:13 BoogieIcfgContainer
[2022-01-10 09:19:13,680 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 09:19:13,680 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 09:19:13,680 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 09:19:13,681 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 09:19:13,684 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:19:13" (1/1) ...
[2022-01-10 09:19:13,752 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:19:13 BasicIcfg
[2022-01-10 09:19:13,752 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 09:19:13,754 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 09:19:13,754 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 09:19:13,757 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 09:19:13,757 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:19:12" (1/4) ...
[2022-01-10 09:19:13,758 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7459f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:19:13, skipping insertion in model container
[2022-01-10 09:19:13,758 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:19:12" (2/4) ...
[2022-01-10 09:19:13,758 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7459f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:19:13, skipping insertion in model container
[2022-01-10 09:19:13,758 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:19:13" (3/4) ...
[2022-01-10 09:19:13,759 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7459f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:19:13, skipping insertion in model container
[2022-01-10 09:19:13,759 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:19:13" (4/4) ...
[2022-01-10 09:19:13,760 INFO  L111   eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound20.cTransformedIcfg
[2022-01-10 09:19:13,764 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 09:19:13,765 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2022-01-10 09:19:13,804 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 09:19:13,811 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 09:19:13,811 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-01-10 09:19:13,821 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 21 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 20 states have internal predecessors, (26), 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 09:19:13,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 09:19:13,825 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:19:13,826 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 09:19:13,826 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:19:13,831 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:19:13,831 INFO  L85        PathProgramCache]: Analyzing trace with hash -1690635992, now seen corresponding path program 1 times
[2022-01-10 09:19:13,838 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:19:13,839 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875443041]
[2022-01-10 09:19:13,839 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:13,840 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:19:13,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:19:13,966 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 09:19:13,968 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:19:13,968 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875443041]
[2022-01-10 09:19:13,969 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875443041] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:19:13,970 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:19:13,970 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 09:19:13,972 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694250701]
[2022-01-10 09:19:13,973 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:19:13,977 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 09:19:13,977 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:19:14,006 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 09:19:14,007 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:19:14,009 INFO  L87              Difference]: Start difference. First operand  has 21 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 20 states have internal predecessors, (26), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 09:19:14,028 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:19:14,028 INFO  L93              Difference]: Finished difference Result 40 states and 50 transitions.
[2022-01-10 09:19:14,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 09:19:14,030 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2022-01-10 09:19:14,030 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:19:14,036 INFO  L225             Difference]: With dead ends: 40
[2022-01-10 09:19:14,036 INFO  L226             Difference]: Without dead ends: 17
[2022-01-10 09:19:14,039 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 09:19:14,044 INFO  L933         BasicCegarLoop]: 22 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, 22 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 09:19:14,045 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:19:14,061 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-10 09:19:14,076 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2022-01-10 09:19:14,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 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 09:19:14,078 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions.
[2022-01-10 09:19:14,079 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 6
[2022-01-10 09:19:14,079 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:19:14,080 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 18 transitions.
[2022-01-10 09:19:14,080 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 09:19:14,080 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions.
[2022-01-10 09:19:14,080 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 09:19:14,081 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:19:14,081 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 09:19:14,081 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 09:19:14,081 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:19:14,082 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:19:14,082 INFO  L85        PathProgramCache]: Analyzing trace with hash -1690604214, now seen corresponding path program 1 times
[2022-01-10 09:19:14,082 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:19:14,083 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195657222]
[2022-01-10 09:19:14,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:14,083 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:19:14,124 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:19:14,125 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954592262]
[2022-01-10 09:19:14,125 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:14,125 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:19:14,125 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:19:14,130 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 09:19:14,132 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 09:19:14,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:19:14,205 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 09:19:14,209 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:19:14,520 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 09:19:14,521 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 09:19:14,521 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:19:14,521 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195657222]
[2022-01-10 09:19:14,521 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 09:19:14,522 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954592262]
[2022-01-10 09:19:14,522 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [954592262] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:19:14,522 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:19:14,522 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 09:19:14,523 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544715703]
[2022-01-10 09:19:14,523 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:19:14,524 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 09:19:14,524 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:19:14,524 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 09:19:14,524 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 09:19:14,525 INFO  L87              Difference]: Start difference. First operand 17 states and 18 transitions. Second operand  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 09:19:15,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:19:15,005 INFO  L93              Difference]: Finished difference Result 33 states and 35 transitions.
[2022-01-10 09:19:15,006 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 09:19:15,006 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6
[2022-01-10 09:19:15,007 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:19:15,007 INFO  L225             Difference]: With dead ends: 33
[2022-01-10 09:19:15,007 INFO  L226             Difference]: Without dead ends: 22
[2022-01-10 09:19:15,008 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:19:15,009 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-10 09:19:15,009 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 35 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-10 09:19:15,010 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-10 09:19:15,013 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-01-10 09:19:15,013 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 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 09:19:15,013 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2022-01-10 09:19:15,014 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6
[2022-01-10 09:19:15,014 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:19:15,014 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2022-01-10 09:19:15,014 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 09:19:15,014 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2022-01-10 09:19:15,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 09:19:15,015 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:19:15,015 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:19:15,024 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 09:19:15,217 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 09:19:15,218 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:19:15,218 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:19:15,218 INFO  L85        PathProgramCache]: Analyzing trace with hash -320923125, now seen corresponding path program 1 times
[2022-01-10 09:19:15,219 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:19:15,219 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76851840]
[2022-01-10 09:19:15,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:15,219 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:19:15,239 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:19:15,243 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178238050]
[2022-01-10 09:19:15,243 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:15,244 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:19:15,244 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:19:15,246 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 09:19:15,248 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 09:19:15,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:19:15,419 INFO  L263         TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-01-10 09:19:15,421 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:19:19,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 09:19:19,211 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:19:23,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 09:19:23,923 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:19:23,925 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76851840]
[2022-01-10 09:19:23,925 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 09:19:23,925 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178238050]
[2022-01-10 09:19:23,925 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178238050] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:19:23,926 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 09:19:23,926 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6
[2022-01-10 09:19:23,926 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572805708]
[2022-01-10 09:19:23,926 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:19:23,926 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 09:19:23,927 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:19:23,927 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 09:19:23,927 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-01-10 09:19:23,928 INFO  L87              Difference]: Start difference. First operand 22 states and 23 transitions. Second operand  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 09:19:24,694 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:19:24,694 INFO  L93              Difference]: Finished difference Result 33 states and 37 transitions.
[2022-01-10 09:19:24,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-10 09:19:24,695 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) Word has length 11
[2022-01-10 09:19:24,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:19:24,695 INFO  L225             Difference]: With dead ends: 33
[2022-01-10 09:19:24,695 INFO  L226             Difference]: Without dead ends: 25
[2022-01-10 09:19:24,696 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2022-01-10 09:19:24,697 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-10 09:19:24,697 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-10 09:19:24,698 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-10 09:19:24,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16.
[2022-01-10 09:19:24,701 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 09:19:24,702 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2022-01-10 09:19:24,702 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11
[2022-01-10 09:19:24,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:19:24,702 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2022-01-10 09:19:24,702 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 09:19:24,702 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2022-01-10 09:19:24,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 09:19:24,703 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:19:24,704 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:19:24,711 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 09:19:24,909 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 09:19:24,909 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:19:24,910 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:19:24,910 INFO  L85        PathProgramCache]: Analyzing trace with hash -1358717027, now seen corresponding path program 1 times
[2022-01-10 09:19:24,910 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:19:24,910 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215533097]
[2022-01-10 09:19:24,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:24,911 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:19:24,937 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:19:24,937 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822189981]
[2022-01-10 09:19:24,937 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:24,938 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:19:24,938 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:19:24,945 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 09:19:24,947 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 09:19:25,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:19:25,111 INFO  L263         TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 09:19:25,112 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:19:25,408 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 09:19:25,408 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:19:25,539 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 09:19:25,540 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:19:25,540 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215533097]
[2022-01-10 09:19:25,540 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 09:19:25,540 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822189981]
[2022-01-10 09:19:25,540 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822189981] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:19:25,540 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 09:19:25,540 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2022-01-10 09:19:25,540 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795408781]
[2022-01-10 09:19:25,541 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:19:25,541 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-10 09:19:25,541 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:19:25,541 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-10 09:19:25,542 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-01-10 09:19:25,542 INFO  L87              Difference]: Start difference. First operand 16 states and 17 transitions. Second operand  has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 09:19:25,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:19:25,809 INFO  L93              Difference]: Finished difference Result 40 states and 43 transitions.
[2022-01-10 09:19:25,810 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 09:19:25,810 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 12
[2022-01-10 09:19:25,810 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:19:25,811 INFO  L225             Difference]: With dead ends: 40
[2022-01-10 09:19:25,811 INFO  L226             Difference]: Without dead ends: 36
[2022-01-10 09:19:25,811 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2022-01-10 09:19:25,812 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:19:25,812 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 49 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:19:25,813 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-10 09:19:25,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28.
[2022-01-10 09:19:25,821 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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 09:19:25,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2022-01-10 09:19:25,821 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12
[2022-01-10 09:19:25,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:19:25,822 INFO  L470      AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2022-01-10 09:19:25,822 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 09:19:25,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2022-01-10 09:19:25,822 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-10 09:19:25,823 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:19:25,824 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:19:25,833 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-10 09:19:26,030 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:19:26,031 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:19:26,032 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:19:26,032 INFO  L85        PathProgramCache]: Analyzing trace with hash -699263583, now seen corresponding path program 1 times
[2022-01-10 09:19:26,032 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:19:26,032 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114918130]
[2022-01-10 09:19:26,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:26,033 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:19:26,063 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:19:26,063 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701093046]
[2022-01-10 09:19:26,063 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:19:26,063 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:19:26,064 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:19:26,067 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 09:19:26,069 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-10 09:19:26,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:19:26,456 INFO  L263         TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-01-10 09:19:26,460 INFO  L286         TraceCheckSpWp]: Computing forward predicates...