/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound1.c


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


This is Ultimate 0.2.2-dev-05ce600
[2022-02-24 00:00:03,564 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-02-24 00:00:03,565 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-24 00:00:03,583 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-24 00:00:03,584 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-24 00:00:03,584 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-24 00:00:03,585 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-02-24 00:00:03,589 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-24 00:00:03,589 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-24 00:00:03,590 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-24 00:00:03,590 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-24 00:00:03,591 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-24 00:00:03,591 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-24 00:00:03,592 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-24 00:00:03,593 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-24 00:00:03,594 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-24 00:00:03,595 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-24 00:00:03,596 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-24 00:00:03,597 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-02-24 00:00:03,597 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-24 00:00:03,599 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-24 00:00:03,599 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-24 00:00:03,599 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-24 00:00:03,600 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-24 00:00:03,600 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-24 00:00:03,601 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-24 00:00:03,601 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-24 00:00:03,601 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-24 00:00:03,602 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-24 00:00:03,602 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-24 00:00:03,603 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-24 00:00:03,603 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-24 00:00:03,604 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-02-24 00:00:03,604 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-24 00:00:03,605 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-02-24 00:00:03,612 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf
[2022-02-24 00:00:03,626 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-02-24 00:00:03,626 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-24 00:00:03,627 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-24 00:00:03,627 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-24 00:00:03,627 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-24 00:00:03,627 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-02-24 00:00:03,627 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-02-24 00:00:03,628 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-02-24 00:00:03,628 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-02-24 00:00:03,629 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-24 00:00:03,629 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-02-24 00:00:03,629 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-02-24 00:00:03,629 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 00:00:03,629 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-24 00:00:03,629 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-02-24 00:00:03,629 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-24 00:00:03,629 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-02-24 00:00:03,629 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-24 00:00:03,630 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-24 00:00:03,630 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-02-24 00:00:03,630 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-02-24 00:00:03,630 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-02-24 00:00:03,630 INFO  L138        SettingsManager]:  * TransformationType=LOOP_ACCELERATION_QVASR
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-24 00:00:03,824 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-24 00:00:03,837 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-24 00:00:03,839 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-24 00:00:03,840 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-02-24 00:00:03,840 INFO  L275        PluginConnector]: CDTParser initialized
[2022-02-24 00:00:03,841 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound1.c
[2022-02-24 00:00:03,879 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea86f443/f6eb57a5c9b2434d9c71cb8a94005199/FLAGe9f80d124
[2022-02-24 00:00:04,234 INFO  L306              CDTParser]: Found 1 translation units.
[2022-02-24 00:00:04,235 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound1.c
[2022-02-24 00:00:04,240 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea86f443/f6eb57a5c9b2434d9c71cb8a94005199/FLAGe9f80d124
[2022-02-24 00:00:04,251 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea86f443/f6eb57a5c9b2434d9c71cb8a94005199
[2022-02-24 00:00:04,253 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-24 00:00:04,254 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-02-24 00:00:04,256 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-24 00:00:04,256 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-24 00:00:04,262 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-24 00:00:04,262 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,263 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15753ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04, skipping insertion in model container
[2022-02-24 00:00:04,263 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,273 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-02-24 00:00:04,282 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-02-24 00:00:04,441 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/prodbin-ll_unwindbound1.c[537,550]
[2022-02-24 00:00:04,463 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-24 00:00:04,467 INFO  L203         MainTranslator]: Completed pre-run
[2022-02-24 00:00:04,475 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/prodbin-ll_unwindbound1.c[537,550]
[2022-02-24 00:00:04,478 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-24 00:00:04,486 INFO  L208         MainTranslator]: Completed translation
[2022-02-24 00:00:04,486 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04 WrapperNode
[2022-02-24 00:00:04,486 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-24 00:00:04,488 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-24 00:00:04,489 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-24 00:00:04,489 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-02-24 00:00:04,496 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,496 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,499 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,499 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,502 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,504 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,504 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,505 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-24 00:00:04,506 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-24 00:00:04,506 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-02-24 00:00:04,506 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-02-24 00:00:04,507 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,512 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 00:00:04,518 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:00:04,527 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-02-24 00:00:04,534 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-02-24 00:00:04,559 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-24 00:00:04,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-24 00:00:04,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-24 00:00:04,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-24 00:00:04,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-24 00:00:04,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2022-02-24 00:00:04,561 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2022-02-24 00:00:04,561 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-24 00:00:04,562 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-24 00:00:04,562 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-24 00:00:04,562 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-02-24 00:00:04,562 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-24 00:00:04,562 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-24 00:00:04,563 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2022-02-24 00:00:04,563 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-24 00:00:04,563 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-24 00:00:04,563 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-24 00:00:04,563 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-02-24 00:00:04,563 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-02-24 00:00:04,563 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-24 00:00:04,608 INFO  L234             CfgBuilder]: Building ICFG
[2022-02-24 00:00:04,609 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-24 00:00:04,722 INFO  L275             CfgBuilder]: Performing block encoding
[2022-02-24 00:00:04,741 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-24 00:00:04,741 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-24 00:00:04,742 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:00:04 BoogieIcfgContainer
[2022-02-24 00:00:04,743 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-24 00:00:04,743 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-02-24 00:00:04,743 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-02-24 00:00:04,746 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-02-24 00:00:04,748 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:00:04" (1/1) ...
[2022-02-24 00:00:04,760 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:00:04 BasicIcfg
[2022-02-24 00:00:04,761 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-02-24 00:00:04,762 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-24 00:00:04,762 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-02-24 00:00:04,764 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-02-24 00:00:04,764 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:00:04" (1/4) ...
[2022-02-24 00:00:04,765 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709f9cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:00:04, skipping insertion in model container
[2022-02-24 00:00:04,765 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:00:04" (2/4) ...
[2022-02-24 00:00:04,765 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709f9cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:00:04, skipping insertion in model container
[2022-02-24 00:00:04,765 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:00:04" (3/4) ...
[2022-02-24 00:00:04,765 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709f9cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:00:04, skipping insertion in model container
[2022-02-24 00:00:04,765 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:00:04" (4/4) ...
[2022-02-24 00:00:04,766 INFO  L111   eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound1.cqvasr
[2022-02-24 00:00:04,769 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-24 00:00:04,769 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-24 00:00:04,797 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-24 00:00:04,801 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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
[2022-02-24 00:00:04,801 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-24 00:00:04,811 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-02-24 00:00:04,814 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-24 00:00:04,814 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-24 00:00:04,814 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:00:04,815 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:00:04,818 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:00:04,818 INFO  L85        PathProgramCache]: Analyzing trace with hash 1957529129, now seen corresponding path program 1 times
[2022-02-24 00:00:04,824 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:00:04,824 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122418844]
[2022-02-24 00:00:04,824 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:04,825 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:00:04,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:00:04,989 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 00:00:04,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:00:04,996 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-24 00:00:04,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:00:05,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 00:00:05,000 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:00:05,001 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122418844]
[2022-02-24 00:00:05,001 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122418844] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:00:05,001 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:00:05,001 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-24 00:00:05,002 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515885888]
[2022-02-24 00:00:05,003 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:00:05,005 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-24 00:00:05,005 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:00:05,024 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-24 00:00:05,024 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-24 00:00:05,026 INFO  L87              Difference]: Start difference. First operand  has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:00:05,075 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:00:05,075 INFO  L93              Difference]: Finished difference Result 52 states and 66 transitions.
[2022-02-24 00:00:05,076 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-24 00:00:05,079 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-02-24 00:00:05,079 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:00:05,084 INFO  L225             Difference]: With dead ends: 52
[2022-02-24 00:00:05,084 INFO  L226             Difference]: Without dead ends: 26
[2022-02-24 00:00:05,086 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-24 00:00:05,088 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:00:05,088 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:00:05,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2022-02-24 00:00:05,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25.
[2022-02-24 00:00:05,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-02-24 00:00:05,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions.
[2022-02-24 00:00:05,126 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17
[2022-02-24 00:00:05,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:00:05,127 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 28 transitions.
[2022-02-24 00:00:05,128 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:00:05,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions.
[2022-02-24 00:00:05,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-02-24 00:00:05,129 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-24 00:00:05,129 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:00:05,129 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-24 00:00:05,130 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:00:05,132 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:00:05,132 INFO  L85        PathProgramCache]: Analyzing trace with hash 583261658, now seen corresponding path program 1 times
[2022-02-24 00:00:05,132 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:00:05,133 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191916671]
[2022-02-24 00:00:05,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:05,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:00:05,154 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:00:05,154 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056228752]
[2022-02-24 00:00:05,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:05,155 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:00:05,155 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:00:05,161 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:00:05,162 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-24 00:00:05,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:00:05,402 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-02-24 00:00:05,405 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-24 00:00:05,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 00:00:05,496 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-24 00:00:05,496 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:00:05,497 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191916671]
[2022-02-24 00:00:05,497 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-24 00:00:05,497 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056228752]
[2022-02-24 00:00:05,497 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056228752] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:00:05,497 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:00:05,497 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-24 00:00:05,498 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771334140]
[2022-02-24 00:00:05,498 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:00:05,498 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-24 00:00:05,499 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:00:05,499 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-24 00:00:05,499 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-24 00:00:05,499 INFO  L87              Difference]: Start difference. First operand 25 states and 28 transitions. Second operand  has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2022-02-24 00:00:05,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:00:05,508 INFO  L93              Difference]: Finished difference Result 34 states and 37 transitions.
[2022-02-24 00:00:05,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-02-24 00:00:05,508 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18
[2022-02-24 00:00:05,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:00:05,509 INFO  L225             Difference]: With dead ends: 34
[2022-02-24 00:00:05,509 INFO  L226             Difference]: Without dead ends: 27
[2022-02-24 00:00:05,509 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-24 00:00:05,510 INFO  L933         BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:00:05,511 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:00:05,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-02-24 00:00:05,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-02-24 00:00:05,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-02-24 00:00:05,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions.
[2022-02-24 00:00:05,515 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18
[2022-02-24 00:00:05,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:00:05,515 INFO  L470      AbstractCegarLoop]: Abstraction has 27 states and 30 transitions.
[2022-02-24 00:00:05,516 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2022-02-24 00:00:05,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions.
[2022-02-24 00:00:05,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-02-24 00:00:05,516 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-24 00:00:05,516 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:00:05,548 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-02-24 00:00:05,731 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
[2022-02-24 00:00:05,732 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:00:05,732 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:00:05,732 INFO  L85        PathProgramCache]: Analyzing trace with hash 584363925, now seen corresponding path program 1 times
[2022-02-24 00:00:05,733 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:00:05,733 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965155050]
[2022-02-24 00:00:05,733 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:05,733 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:00:05,742 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:00:05,743 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167644801]
[2022-02-24 00:00:05,743 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:05,743 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:00:05,743 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:00:05,744 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:00:05,745 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-24 00:00:05,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:00:05,799 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-02-24 00:00:05,801 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-24 00:00:05,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 00:00:05,933 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-24 00:00:05,933 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:00:05,935 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965155050]
[2022-02-24 00:00:05,935 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-24 00:00:05,935 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167644801]
[2022-02-24 00:00:05,935 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [167644801] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:00:05,935 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:00:05,935 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-24 00:00:05,935 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761680449]
[2022-02-24 00:00:05,936 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:00:05,936 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-24 00:00:05,936 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:00:05,937 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-24 00:00:05,937 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-24 00:00:05,937 INFO  L87              Difference]: Start difference. First operand 27 states and 30 transitions. Second operand  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:00:06,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:00:06,002 INFO  L93              Difference]: Finished difference Result 38 states and 43 transitions.
[2022-02-24 00:00:06,002 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-02-24 00:00:06,002 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2022-02-24 00:00:06,003 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:00:06,003 INFO  L225             Difference]: With dead ends: 38
[2022-02-24 00:00:06,003 INFO  L226             Difference]: Without dead ends: 36
[2022-02-24 00:00:06,004 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-24 00:00:06,004 INFO  L933         BasicCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:00:06,005 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:00:06,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-02-24 00:00:06,008 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32.
[2022-02-24 00:00:06,009 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2022-02-24 00:00:06,009 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions.
[2022-02-24 00:00:06,009 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18
[2022-02-24 00:00:06,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:00:06,009 INFO  L470      AbstractCegarLoop]: Abstraction has 32 states and 35 transitions.
[2022-02-24 00:00:06,010 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:00:06,010 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions.
[2022-02-24 00:00:06,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-24 00:00:06,010 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-24 00:00:06,010 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:00:06,057 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-02-24 00:00:06,245 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
[2022-02-24 00:00:06,245 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:00:06,246 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:00:06,246 INFO  L85        PathProgramCache]: Analyzing trace with hash 1698322804, now seen corresponding path program 1 times
[2022-02-24 00:00:06,246 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:00:06,246 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646654368]
[2022-02-24 00:00:06,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:06,246 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:00:06,259 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:00:06,260 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795149638]
[2022-02-24 00:00:06,260 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:06,260 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:00:06,260 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:00:06,286 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:00:06,325 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-24 00:00:06,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:00:06,361 INFO  L263         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-24 00:00:06,362 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-24 00:00:06,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 00:00:06,454 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-24 00:00:06,454 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:00:06,454 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646654368]
[2022-02-24 00:00:06,454 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-24 00:00:06,454 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795149638]
[2022-02-24 00:00:06,455 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795149638] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:00:06,455 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:00:06,455 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-24 00:00:06,455 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509649105]
[2022-02-24 00:00:06,455 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:00:06,455 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-24 00:00:06,455 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:00:06,456 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-24 00:00:06,456 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-02-24 00:00:06,456 INFO  L87              Difference]: Start difference. First operand 32 states and 35 transitions. Second operand  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-24 00:00:06,531 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:00:06,531 INFO  L93              Difference]: Finished difference Result 42 states and 46 transitions.
[2022-02-24 00:00:06,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-02-24 00:00:06,532 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24
[2022-02-24 00:00:06,533 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:00:06,534 INFO  L225             Difference]: With dead ends: 42
[2022-02-24 00:00:06,535 INFO  L226             Difference]: Without dead ends: 35
[2022-02-24 00:00:06,536 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-02-24 00:00:06,539 INFO  L933         BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:00:06,544 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 97 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:00:06,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2022-02-24 00:00:06,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33.
[2022-02-24 00:00:06,548 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-02-24 00:00:06,548 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions.
[2022-02-24 00:00:06,548 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24
[2022-02-24 00:00:06,548 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:00:06,548 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 36 transitions.
[2022-02-24 00:00:06,549 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-24 00:00:06,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions.
[2022-02-24 00:00:06,549 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-02-24 00:00:06,549 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-24 00:00:06,549 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:00:06,601 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-24 00:00:06,767 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
[2022-02-24 00:00:06,767 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:00:06,768 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:00:06,768 INFO  L85        PathProgramCache]: Analyzing trace with hash 919545147, now seen corresponding path program 1 times
[2022-02-24 00:00:06,768 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:00:06,768 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186134939]
[2022-02-24 00:00:06,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:06,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:00:06,777 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:00:06,777 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154525333]
[2022-02-24 00:00:06,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:00:06,778 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:00:06,778 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:00:06,782 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:00:06,837 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-24 00:00:06,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-24 00:00:06,859 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-02-24 00:00:06,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-24 00:00:06,914 INFO  L138   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-02-24 00:00:06,914 INFO  L628         BasicCegarLoop]: Counterexample is feasible
[2022-02-24 00:00:06,915 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-24 00:00:06,955 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-02-24 00:00:07,133 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:00:07,136 INFO  L732         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2022-02-24 00:00:07,138 INFO  L180   ceAbstractionStarter]: Computing trace abstraction results
[2022-02-24 00:00:07,154 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:00:07 BasicIcfg
[2022-02-24 00:00:07,154 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-24 00:00:07,154 INFO  L158              Benchmark]: Toolchain (without parser) took 2899.98ms. Allocated memory was 198.2MB in the beginning and 238.0MB in the end (delta: 39.8MB). Free memory was 145.2MB in the beginning and 179.6MB in the end (delta: -34.4MB). Peak memory consumption was 6.4MB. Max. memory is 8.0GB.
[2022-02-24 00:00:07,154 INFO  L158              Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 161.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-24 00:00:07,155 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 231.72ms. Allocated memory is still 198.2MB. Free memory was 145.0MB in the beginning and 172.1MB in the end (delta: -27.1MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB.
[2022-02-24 00:00:07,155 INFO  L158              Benchmark]: Boogie Preprocessor took 17.21ms. Allocated memory is still 198.2MB. Free memory was 172.1MB in the beginning and 170.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-24 00:00:07,155 INFO  L158              Benchmark]: RCFGBuilder took 236.73ms. Allocated memory is still 198.2MB. Free memory was 170.8MB in the beginning and 160.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-02-24 00:00:07,155 INFO  L158              Benchmark]: IcfgTransformer took 17.60ms. Allocated memory is still 198.2MB. Free memory was 160.6MB in the beginning and 159.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-24 00:00:07,164 INFO  L158              Benchmark]: TraceAbstraction took 2392.00ms. Allocated memory was 198.2MB in the beginning and 238.0MB in the end (delta: 39.8MB). Free memory was 158.9MB in the beginning and 179.6MB in the end (delta: -20.8MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB.
[2022-02-24 00:00:07,185 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 161.3MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 231.72ms. Allocated memory is still 198.2MB. Free memory was 145.0MB in the beginning and 172.1MB in the end (delta: -27.1MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 17.21ms. Allocated memory is still 198.2MB. Free memory was 172.1MB in the beginning and 170.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * RCFGBuilder took 236.73ms. Allocated memory is still 198.2MB. Free memory was 170.8MB in the beginning and 160.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * IcfgTransformer took 17.60ms. Allocated memory is still 198.2MB. Free memory was 160.6MB in the beginning and 159.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * TraceAbstraction took 2392.00ms. Allocated memory was 198.2MB in the beginning and 238.0MB in the end (delta: 39.8MB). Free memory was 158.9MB in the beginning and 179.6MB in the end (delta: -20.8MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 15]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L20]              int counter = 0;
       VAL         [\old(counter)=5, counter=0]
[L22]              int a, b;
[L23]              long long x, y, z;
[L25]              a = __VERIFIER_nondet_int()
[L26]              b = __VERIFIER_nondet_int()
[L27]  CALL        assume_abort_if_not(b >= 1)
       VAL         [\old(cond)=1, \old(counter)=0, counter=0]
[L10]  COND FALSE  !(!cond)
       VAL         [\old(cond)=1, \old(counter)=0, cond=1, counter=0]
[L27]  RET         assume_abort_if_not(b >= 1)
       VAL         [\old(counter)=0, a=-2, b=3, counter=0]
[L29]              x = a
[L30]              y = b
[L31]              z = 0
       VAL         [\old(counter)=0, a=-2, b=3, counter=0, x=-2, y=3, z=0]
[L33]  EXPR        counter++
       VAL         [\old(counter)=0, a=-2, b=3, counter=1, counter++=0, x=-2, y=3, z=0]
[L33]  COND TRUE   counter++<1
[L34]  CALL        __VERIFIER_assert(z + x * y == (long long) a * b)
       VAL         [\old(cond)=1, \old(counter)=0, counter=1]
[L13]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, \old(counter)=0, cond=1, counter=1]
[L34]  RET         __VERIFIER_assert(z + x * y == (long long) a * b)
       VAL         [\old(counter)=0, a=-2, b=3, counter=1, x=-2, y=3, z=0]
[L35]  COND FALSE  !(!(y != 0))
       VAL         [\old(counter)=0, a=-2, b=3, counter=1, x=-2, y=3, z=0]
[L38]  COND TRUE   y % 2 == 1
[L39]              z = z + x
[L40]              y = y - 1
       VAL         [\old(counter)=0, a=-2, b=3, counter=1, x=-2, y=2, z=-2]
[L42]              x = 2 * x
[L43]              y = y / 2
       VAL         [\old(counter)=0, a=-2, b=3, counter=1, x=-4, y=1, z=-2]
[L33]  EXPR        counter++
       VAL         [\old(counter)=0, a=-2, b=3, counter=2, counter++=1, x=-4, y=1, z=-2]
[L33]  COND FALSE  !(counter++<1)
[L45]  CALL        __VERIFIER_assert(z == (long long) a * b)
       VAL         [\old(cond)=0, \old(counter)=0, counter=2]
[L13]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, \old(counter)=0, cond=0, counter=2]
[L15]              reach_error()
       VAL         [\old(cond)=0, \old(counter)=0, cond=0, counter=2]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 281 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 102 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 155 SizeOfPredicates, 4 NumberOfNonLiveVariables, 263 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2022-02-24 00:00:07,230 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...