/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/egcd-ll_valuebound100.c


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


This is Ultimate 0.2.2-dev-05ce600
[2022-02-23 22:34:42,381 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-02-23 22:34:42,397 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-23 22:34:42,440 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-23 22:34:42,441 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-23 22:34:42,442 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-23 22:34:42,443 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-02-23 22:34:42,447 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2022-02-23 22:34:42,450 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-23 22:34:42,451 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-23 22:34:42,452 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-23 22:34:42,453 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-23 22:34:42,453 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-23 22:34:42,454 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-23 22:34:42,455 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-23 22:34:42,457 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-23 22:34:42,458 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-23 22:34:42,459 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-23 22:34:42,460 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-02-23 22:34:42,461 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-23 22:34:42,463 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-02-23 22:34:42,464 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-23 22:34:42,465 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-23 22:34:42,465 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-23 22:34:42,466 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-23 22:34:42,466 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-23 22:34:42,467 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-23 22:34:42,467 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-23 22:34:42,468 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-23 22:34:42,469 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-23 22:34:42,469 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-23 22:34:42,470 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-02-23 22:34:42,470 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-23 22:34:42,472 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-02-23 22:34:42,473 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf
[2022-02-23 22:34:42,505 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-02-23 22:34:42,506 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-23 22:34:42,507 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-23 22:34:42,507 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-23 22:34:42,508 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-23 22:34:42,508 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-02-23 22:34:42,508 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-02-23 22:34:42,509 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-23 22:34:42,509 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-02-23 22:34:42,509 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-02-23 22:34:42,510 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-02-23 22:34:42,510 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-23 22:34:42,510 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-02-23 22:34:42,510 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-02-23 22:34:42,510 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-02-23 22:34:42,510 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-02-23 22:34:42,510 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-23 22:34:42,511 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-02-23 22:34:42,511 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-02-23 22:34:42,511 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 22:34:42,511 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-23 22:34:42,511 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-02-23 22:34:42,511 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-23 22:34:42,511 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-02-23 22:34:42,511 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-23 22:34:42,512 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-23 22:34:42,512 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-02-23 22:34:42,512 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-02-23 22:34:42,513 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-02-23 22:34:42,514 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-23 22:34:42,782 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-23 22:34:42,810 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-23 22:34:42,812 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-23 22:34:42,813 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-02-23 22:34:42,814 INFO  L275        PluginConnector]: CDTParser initialized
[2022-02-23 22:34:42,816 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound100.c
[2022-02-23 22:34:42,882 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdea3a87c/c5f964a0bd274e33bf80b4864c416245/FLAG5933141aa
[2022-02-23 22:34:43,318 INFO  L306              CDTParser]: Found 1 translation units.
[2022-02-23 22:34:43,319 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound100.c
[2022-02-23 22:34:43,325 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdea3a87c/c5f964a0bd274e33bf80b4864c416245/FLAG5933141aa
[2022-02-23 22:34:43,336 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdea3a87c/c5f964a0bd274e33bf80b4864c416245
[2022-02-23 22:34:43,344 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-23 22:34:43,346 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-02-23 22:34:43,348 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-23 22:34:43,348 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-23 22:34:43,351 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-23 22:34:43,352 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,353 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c4d46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43, skipping insertion in model container
[2022-02-23 22:34:43,353 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,362 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-02-23 22:34:43,376 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-02-23 22:34:43,515 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/egcd-ll_valuebound100.c[489,502]
[2022-02-23 22:34:43,532 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-23 22:34:43,539 INFO  L203         MainTranslator]: Completed pre-run
[2022-02-23 22:34:43,556 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/egcd-ll_valuebound100.c[489,502]
[2022-02-23 22:34:43,564 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-23 22:34:43,576 INFO  L208         MainTranslator]: Completed translation
[2022-02-23 22:34:43,577 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43 WrapperNode
[2022-02-23 22:34:43,577 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-23 22:34:43,581 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-23 22:34:43,582 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-23 22:34:43,582 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-02-23 22:34:43,593 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,594 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,600 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,600 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,609 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,613 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,614 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,615 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-23 22:34:43,616 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-23 22:34:43,616 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-02-23 22:34:43,616 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-02-23 22:34:43,617 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,626 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 22:34:43,634 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:43,646 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-02-23 22:34:43,648 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-02-23 22:34:43,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-23 22:34:43,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-23 22:34:43,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-23 22:34:43,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-23 22:34:43,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-23 22:34:43,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2022-02-23 22:34:43,678 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2022-02-23 22:34:43,678 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-23 22:34:43,678 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-23 22:34:43,678 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-23 22:34:43,678 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-02-23 22:34:43,678 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-02-23 22:34:43,679 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-23 22:34:43,733 INFO  L234             CfgBuilder]: Building ICFG
[2022-02-23 22:34:43,735 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-23 22:34:43,926 INFO  L275             CfgBuilder]: Performing block encoding
[2022-02-23 22:34:43,932 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-23 22:34:43,932 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-23 22:34:43,934 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:43 BoogieIcfgContainer
[2022-02-23 22:34:43,934 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-23 22:34:43,942 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-02-23 22:34:43,943 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-02-23 22:34:43,944 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-02-23 22:34:43,947 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:43" (1/1) ...
[2022-02-23 22:34:43,978 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:34:43 BasicIcfg
[2022-02-23 22:34:43,978 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-02-23 22:34:43,981 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-23 22:34:43,981 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-02-23 22:34:43,983 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-02-23 22:34:43,984 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:43" (1/4) ...
[2022-02-23 22:34:43,985 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324eef2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:43, skipping insertion in model container
[2022-02-23 22:34:43,985 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:43" (2/4) ...
[2022-02-23 22:34:43,985 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324eef2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:43, skipping insertion in model container
[2022-02-23 22:34:43,985 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:43" (3/4) ...
[2022-02-23 22:34:43,986 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324eef2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:43, skipping insertion in model container
[2022-02-23 22:34:43,986 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:34:43" (4/4) ...
[2022-02-23 22:34:43,987 INFO  L111   eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound100.cqvasr
[2022-02-23 22:34:43,992 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-23 22:34:43,993 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-23 22:34:44,048 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-23 22:34:44,056 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
[2022-02-23 22:34:44,057 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-23 22:34:44,083 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-02-23 22:34:44,088 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-02-23 22:34:44,088 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:44,089 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 22:34:44,089 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:44,095 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:44,095 INFO  L85        PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times
[2022-02-23 22:34:44,103 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:44,104 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106566504]
[2022-02-23 22:34:44,105 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:44,106 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:44,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:44,281 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 22:34:44,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:44,311 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-23 22:34:44,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:44,324 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2022-02-23 22:34:44,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:44,333 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2022-02-23 22:34:44,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:44,349 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2022-02-23 22:34:44,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:44,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-02-23 22:34:44,360 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:44,361 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106566504]
[2022-02-23 22:34:44,362 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106566504] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 22:34:44,362 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 22:34:44,362 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-23 22:34:44,364 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698746059]
[2022-02-23 22:34:44,364 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 22:34:44,369 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-23 22:34:44,371 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:44,399 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-23 22:34:44,400 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-23 22:34:44,402 INFO  L87              Difference]: Start difference. First operand  has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-02-23 22:34:44,526 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:44,526 INFO  L93              Difference]: Finished difference Result 67 states and 105 transitions.
[2022-02-23 22:34:44,528 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-23 22:34:44,529 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33
[2022-02-23 22:34:44,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:44,540 INFO  L225             Difference]: With dead ends: 67
[2022-02-23 22:34:44,540 INFO  L226             Difference]: Without dead ends: 32
[2022-02-23 22:34:44,544 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-23 22:34:44,548 INFO  L933         BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:44,549 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 22:34:44,565 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-02-23 22:34:44,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-02-23 22:34:44,592 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-02-23 22:34:44,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions.
[2022-02-23 22:34:44,598 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33
[2022-02-23 22:34:44,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:44,599 INFO  L470      AbstractCegarLoop]: Abstraction has 32 states and 42 transitions.
[2022-02-23 22:34:44,599 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-02-23 22:34:44,600 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions.
[2022-02-23 22:34:44,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-02-23 22:34:44,602 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:44,602 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 22:34:44,603 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-23 22:34:44,603 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:44,605 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:44,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times
[2022-02-23 22:34:44,606 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:44,606 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741027081]
[2022-02-23 22:34:44,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:44,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:44,652 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:44,653 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887084912]
[2022-02-23 22:34:44,653 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:44,653 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:44,653 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:44,655 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:44,678 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-23 22:34:44,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:44,713 INFO  L263         TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-02-23 22:34:44,723 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:44,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-02-23 22:34:44,893 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 22:34:44,893 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:44,894 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741027081]
[2022-02-23 22:34:44,894 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:44,897 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887084912]
[2022-02-23 22:34:44,898 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887084912] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 22:34:44,898 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 22:34:44,898 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 22:34:44,900 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063281145]
[2022-02-23 22:34:44,901 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 22:34:44,904 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 22:34:44,904 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:44,907 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 22:34:44,908 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 22:34:44,908 INFO  L87              Difference]: Start difference. First operand 32 states and 42 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2022-02-23 22:34:44,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:44,957 INFO  L93              Difference]: Finished difference Result 48 states and 65 transitions.
[2022-02-23 22:34:44,958 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-02-23 22:34:44,958 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33
[2022-02-23 22:34:44,959 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:44,960 INFO  L225             Difference]: With dead ends: 48
[2022-02-23 22:34:44,960 INFO  L226             Difference]: Without dead ends: 46
[2022-02-23 22:34:44,960 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 22:34:44,961 INFO  L933         BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:44,962 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 155 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 22:34:44,963 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2022-02-23 22:34:44,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45.
[2022-02-23 22:34:44,972 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)
[2022-02-23 22:34:44,973 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions.
[2022-02-23 22:34:44,974 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33
[2022-02-23 22:34:44,974 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:44,974 INFO  L470      AbstractCegarLoop]: Abstraction has 45 states and 62 transitions.
[2022-02-23 22:34:44,974 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2022-02-23 22:34:44,974 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions.
[2022-02-23 22:34:44,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2022-02-23 22:34:44,975 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:44,975 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 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]
[2022-02-23 22:34:45,000 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-02-23 22:34:45,192 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
[2022-02-23 22:34:45,193 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:45,193 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:45,194 INFO  L85        PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times
[2022-02-23 22:34:45,194 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:45,194 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267628421]
[2022-02-23 22:34:45,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:45,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:45,216 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:45,216 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154840526]
[2022-02-23 22:34:45,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:45,216 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:45,217 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:45,223 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:45,225 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-23 22:34:45,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:45,266 INFO  L263         TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-02-23 22:34:45,268 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:45,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-02-23 22:34:45,395 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 22:34:45,395 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:45,396 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267628421]
[2022-02-23 22:34:45,396 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:45,396 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154840526]
[2022-02-23 22:34:45,396 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [154840526] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 22:34:45,396 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 22:34:45,396 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 22:34:45,396 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235354671]
[2022-02-23 22:34:45,397 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 22:34:45,397 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 22:34:45,397 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:45,398 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 22:34:45,398 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 22:34:45,398 INFO  L87              Difference]: Start difference. First operand 45 states and 62 transitions. Second operand  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2022-02-23 22:34:45,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:45,465 INFO  L93              Difference]: Finished difference Result 52 states and 68 transitions.
[2022-02-23 22:34:45,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-02-23 22:34:45,467 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38
[2022-02-23 22:34:45,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:45,469 INFO  L225             Difference]: With dead ends: 52
[2022-02-23 22:34:45,470 INFO  L226             Difference]: Without dead ends: 50
[2022-02-23 22:34:45,470 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 22:34:45,474 INFO  L933         BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 156 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
[2022-02-23 22:34:45,475 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 156 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 22:34:45,477 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-02-23 22:34:45,490 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49.
[2022-02-23 22:34:45,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)
[2022-02-23 22:34:45,499 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions.
[2022-02-23 22:34:45,499 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38
[2022-02-23 22:34:45,499 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:45,499 INFO  L470      AbstractCegarLoop]: Abstraction has 49 states and 65 transitions.
[2022-02-23 22:34:45,500 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2022-02-23 22:34:45,500 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions.
[2022-02-23 22:34:45,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2022-02-23 22:34:45,503 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:45,503 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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]
[2022-02-23 22:34:45,529 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-02-23 22:34:45,718 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
[2022-02-23 22:34:45,719 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:45,719 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:45,720 INFO  L85        PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times
[2022-02-23 22:34:45,720 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:45,720 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963353382]
[2022-02-23 22:34:45,720 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:45,720 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:45,732 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:45,733 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115553393]
[2022-02-23 22:34:45,733 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:45,733 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:45,733 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:45,734 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:45,747 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-23 22:34:45,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:45,779 INFO  L263         TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-02-23 22:34:45,781 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:45,987 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-02-23 22:34:45,987 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 22:34:46,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-02-23 22:34:46,128 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:46,129 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963353382]
[2022-02-23 22:34:46,129 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:46,129 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115553393]
[2022-02-23 22:34:46,129 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115553393] provided 1 perfect and 1 imperfect interpolant sequences
[2022-02-23 22:34:46,129 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-02-23 22:34:46,129 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10
[2022-02-23 22:34:46,129 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215762260]
[2022-02-23 22:34:46,130 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 22:34:46,130 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 22:34:46,130 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:46,130 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 22:34:46,131 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2022-02-23 22:34:46,131 INFO  L87              Difference]: Start difference. First operand 49 states and 65 transitions. Second operand  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-02-23 22:34:46,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:46,181 INFO  L93              Difference]: Finished difference Result 74 states and 105 transitions.
[2022-02-23 22:34:46,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-02-23 22:34:46,182 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43
[2022-02-23 22:34:46,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:46,184 INFO  L225             Difference]: With dead ends: 74
[2022-02-23 22:34:46,184 INFO  L226             Difference]: Without dead ends: 70
[2022-02-23 22:34:46,185 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2022-02-23 22:34:46,186 INFO  L933         BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:46,186 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 155 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 22:34:46,187 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2022-02-23 22:34:46,195 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2022-02-23 22:34:46,196 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 70 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2022-02-23 22:34:46,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions.
[2022-02-23 22:34:46,197 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43
[2022-02-23 22:34:46,197 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:46,197 INFO  L470      AbstractCegarLoop]: Abstraction has 70 states and 98 transitions.
[2022-02-23 22:34:46,197 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-02-23 22:34:46,198 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions.
[2022-02-23 22:34:46,198 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2022-02-23 22:34:46,198 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:46,199 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 22:34:46,226 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-23 22:34:46,424 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
[2022-02-23 22:34:46,424 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:46,425 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:46,425 INFO  L85        PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times
[2022-02-23 22:34:46,425 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:46,425 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860899285]
[2022-02-23 22:34:46,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:46,425 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:46,443 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:46,443 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008675402]
[2022-02-23 22:34:46,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:46,443 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:46,444 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:46,447 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:46,449 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-23 22:34:46,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:46,489 INFO  L263         TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-02-23 22:34:46,491 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:46,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2022-02-23 22:34:46,602 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 22:34:46,602 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:46,602 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860899285]
[2022-02-23 22:34:46,602 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:46,602 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008675402]
[2022-02-23 22:34:46,603 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008675402] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 22:34:46,603 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 22:34:46,603 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 22:34:46,603 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139658708]
[2022-02-23 22:34:46,603 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 22:34:46,603 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 22:34:46,604 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:46,604 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 22:34:46,604 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 22:34:46,604 INFO  L87              Difference]: Start difference. First operand 70 states and 98 transitions. Second operand  has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8)
[2022-02-23 22:34:46,642 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:46,642 INFO  L93              Difference]: Finished difference Result 76 states and 103 transitions.
[2022-02-23 22:34:46,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-02-23 22:34:46,643 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 49
[2022-02-23 22:34:46,644 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:46,646 INFO  L225             Difference]: With dead ends: 76
[2022-02-23 22:34:46,646 INFO  L226             Difference]: Without dead ends: 74
[2022-02-23 22:34:46,646 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 22:34:46,647 INFO  L933         BasicCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:46,647 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 22:34:46,649 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2022-02-23 22:34:46,667 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74.
[2022-02-23 22:34:46,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 74 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2022-02-23 22:34:46,669 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions.
[2022-02-23 22:34:46,669 INFO  L78                 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49
[2022-02-23 22:34:46,669 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:46,669 INFO  L470      AbstractCegarLoop]: Abstraction has 74 states and 101 transitions.
[2022-02-23 22:34:46,670 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8)
[2022-02-23 22:34:46,670 INFO  L276                IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions.
[2022-02-23 22:34:46,671 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2022-02-23 22:34:46,671 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:46,671 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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, 1]
[2022-02-23 22:34:46,699 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-02-23 22:34:46,894 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
[2022-02-23 22:34:46,894 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:46,895 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:46,895 INFO  L85        PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times
[2022-02-23 22:34:46,895 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:46,895 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163984395]
[2022-02-23 22:34:46,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:46,895 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:46,909 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:46,909 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340225747]
[2022-02-23 22:34:46,909 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:46,909 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:46,910 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:46,914 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:46,915 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-02-23 22:34:46,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:46,968 INFO  L263         TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-02-23 22:34:46,972 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:47,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked.
[2022-02-23 22:34:47,118 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 22:34:47,119 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:47,119 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163984395]
[2022-02-23 22:34:47,119 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:47,119 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340225747]
[2022-02-23 22:34:47,119 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340225747] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 22:34:47,119 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 22:34:47,119 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 22:34:47,119 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119192261]
[2022-02-23 22:34:47,119 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 22:34:47,120 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 22:34:47,120 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:47,120 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 22:34:47,120 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 22:34:47,121 INFO  L87              Difference]: Start difference. First operand 74 states and 101 transitions. Second operand  has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2022-02-23 22:34:47,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:47,165 INFO  L93              Difference]: Finished difference Result 84 states and 109 transitions.
[2022-02-23 22:34:47,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-02-23 22:34:47,166 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51
[2022-02-23 22:34:47,166 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:47,167 INFO  L225             Difference]: With dead ends: 84
[2022-02-23 22:34:47,167 INFO  L226             Difference]: Without dead ends: 81
[2022-02-23 22:34:47,167 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 22:34:47,168 INFO  L933         BasicCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:47,169 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 22:34:47,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2022-02-23 22:34:47,176 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79.
[2022-02-23 22:34:47,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24)
[2022-02-23 22:34:47,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions.
[2022-02-23 22:34:47,177 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51
[2022-02-23 22:34:47,178 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:47,178 INFO  L470      AbstractCegarLoop]: Abstraction has 79 states and 102 transitions.
[2022-02-23 22:34:47,178 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2022-02-23 22:34:47,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions.
[2022-02-23 22:34:47,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2022-02-23 22:34:47,179 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:47,179 INFO  L514         BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 22:34:47,208 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-02-23 22:34:47,394 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:47,395 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:47,396 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:47,396 INFO  L85        PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times
[2022-02-23 22:34:47,396 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:47,396 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828918277]
[2022-02-23 22:34:47,396 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:47,396 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:47,408 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:47,408 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218257011]
[2022-02-23 22:34:47,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:47,408 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:47,408 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:47,414 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:47,435 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-02-23 22:34:47,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:47,461 INFO  L263         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-02-23 22:34:47,463 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:47,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2022-02-23 22:34:47,582 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 22:34:47,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2022-02-23 22:34:47,743 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:47,743 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828918277]
[2022-02-23 22:34:47,743 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:47,743 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218257011]
[2022-02-23 22:34:47,743 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218257011] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 22:34:47,743 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 22:34:47,743 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2022-02-23 22:34:47,743 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060195914]
[2022-02-23 22:34:47,743 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 22:34:47,744 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-02-23 22:34:47,744 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:47,744 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-02-23 22:34:47,745 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2022-02-23 22:34:47,745 INFO  L87              Difference]: Start difference. First operand 79 states and 102 transitions. Second operand  has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2022-02-23 22:34:47,862 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:47,862 INFO  L93              Difference]: Finished difference Result 88 states and 112 transitions.
[2022-02-23 22:34:47,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-02-23 22:34:47,863 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54
[2022-02-23 22:34:47,863 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:47,864 INFO  L225             Difference]: With dead ends: 88
[2022-02-23 22:34:47,864 INFO  L226             Difference]: Without dead ends: 84
[2022-02-23 22:34:47,864 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2022-02-23 22:34:47,865 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:47,865 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 179 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 22:34:47,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2022-02-23 22:34:47,881 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2022-02-23 22:34:47,882 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25)
[2022-02-23 22:34:47,883 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions.
[2022-02-23 22:34:47,883 INFO  L78                 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54
[2022-02-23 22:34:47,883 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:47,883 INFO  L470      AbstractCegarLoop]: Abstraction has 84 states and 105 transitions.
[2022-02-23 22:34:47,883 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2022-02-23 22:34:47,884 INFO  L276                IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions.
[2022-02-23 22:34:47,884 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2022-02-23 22:34:47,884 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:47,885 INFO  L514         BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 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]
[2022-02-23 22:34:47,913 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-02-23 22:34:48,110 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:48,110 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:48,111 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:48,111 INFO  L85        PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 2 times
[2022-02-23 22:34:48,111 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:48,111 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663384080]
[2022-02-23 22:34:48,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:48,111 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:48,122 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:48,122 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623746424]
[2022-02-23 22:34:48,123 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-23 22:34:48,123 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:48,123 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:48,128 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:48,130 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-02-23 22:34:48,181 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-23 22:34:48,181 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 22:34:48,182 INFO  L263         TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-02-23 22:34:48,185 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:48,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-02-23 22:34:48,384 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 22:34:48,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-02-23 22:34:48,520 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:48,520 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663384080]
[2022-02-23 22:34:48,521 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:48,521 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623746424]
[2022-02-23 22:34:48,521 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623746424] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 22:34:48,521 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 22:34:48,521 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2022-02-23 22:34:48,521 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992553330]
[2022-02-23 22:34:48,521 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 22:34:48,522 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-23 22:34:48,522 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:48,522 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-23 22:34:48,522 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-02-23 22:34:48,523 INFO  L87              Difference]: Start difference. First operand 84 states and 105 transitions. Second operand  has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)
[2022-02-23 22:34:48,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:48,991 INFO  L93              Difference]: Finished difference Result 110 states and 141 transitions.
[2022-02-23 22:34:48,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-02-23 22:34:48,994 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 56
[2022-02-23 22:34:48,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:48,995 INFO  L225             Difference]: With dead ends: 110
[2022-02-23 22:34:48,995 INFO  L226             Difference]: Without dead ends: 103
[2022-02-23 22:34:48,996 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2022-02-23 22:34:48,996 INFO  L933         BasicCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:48,997 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 205 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-23 22:34:48,997 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-02-23 22:34:49,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88.
[2022-02-23 22:34:49,012 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21)
[2022-02-23 22:34:49,012 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions.
[2022-02-23 22:34:49,013 INFO  L78                 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 56
[2022-02-23 22:34:49,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:49,013 INFO  L470      AbstractCegarLoop]: Abstraction has 88 states and 102 transitions.
[2022-02-23 22:34:49,013 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)
[2022-02-23 22:34:49,013 INFO  L276                IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions.
[2022-02-23 22:34:49,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2022-02-23 22:34:49,014 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 22:34:49,014 INFO  L514         BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 22:34:49,039 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2022-02-23 22:34:49,215 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:49,215 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 22:34:49,216 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 22:34:49,216 INFO  L85        PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times
[2022-02-23 22:34:49,216 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 22:34:49,216 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073743035]
[2022-02-23 22:34:49,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:49,216 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 22:34:49,227 ERROR L252   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 22:34:49,227 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919920770]
[2022-02-23 22:34:49,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 22:34:49,227 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 22:34:49,228 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 22:34:49,229 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 22:34:49,256 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-02-23 22:34:49,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 22:34:49,288 INFO  L263         TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-02-23 22:34:49,290 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 22:34:49,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-02-23 22:34:49,527 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 22:34:49,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2022-02-23 22:34:49,697 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 22:34:49,697 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073743035]
[2022-02-23 22:34:49,698 WARN  L317   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 22:34:49,698 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919920770]
[2022-02-23 22:34:49,698 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [919920770] provided 1 perfect and 1 imperfect interpolant sequences
[2022-02-23 22:34:49,698 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-02-23 22:34:49,698 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8
[2022-02-23 22:34:49,698 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066709628]
[2022-02-23 22:34:49,698 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 22:34:49,699 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 22:34:49,699 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 22:34:49,699 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 22:34:49,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-02-23 22:34:49,699 INFO  L87              Difference]: Start difference. First operand 88 states and 102 transitions. Second operand  has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2022-02-23 22:34:49,741 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 22:34:49,741 INFO  L93              Difference]: Finished difference Result 88 states and 102 transitions.
[2022-02-23 22:34:49,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-02-23 22:34:49,742 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69
[2022-02-23 22:34:49,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 22:34:49,742 INFO  L225             Difference]: With dead ends: 88
[2022-02-23 22:34:49,742 INFO  L226             Difference]: Without dead ends: 0
[2022-02-23 22:34:49,743 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2022-02-23 22:34:49,744 INFO  L933         BasicCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 22:34:49,744 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 118 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 22:34:49,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-02-23 22:34:49,744 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-02-23 22:34:49,745 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-23 22:34:49,745 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-02-23 22:34:49,745 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69
[2022-02-23 22:34:49,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 22:34:49,745 INFO  L470      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-02-23 22:34:49,745 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2022-02-23 22:34:49,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-02-23 22:34:49,745 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2022-02-23 22:34:49,748 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-23 22:34:49,779 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2022-02-23 22:34:49,970 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2022-02-23 22:34:49,972 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-02-23 22:34:51,364 INFO  L854   garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))
[2022-02-23 22:34:51,364 INFO  L858   garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2022-02-23 22:34:51,364 INFO  L858   garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2022-02-23 22:34:51,364 INFO  L861   garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2022-02-23 22:34:51,364 INFO  L861   garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true
[2022-02-23 22:34:51,365 INFO  L858   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2022-02-23 22:34:51,365 INFO  L858   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2022-02-23 22:34:51,365 INFO  L861   garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true
[2022-02-23 22:34:51,365 INFO  L858   garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed.
[2022-02-23 22:34:51,365 INFO  L858   garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed.
[2022-02-23 22:34:51,366 INFO  L858   garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed.
[2022-02-23 22:34:51,366 INFO  L861   garLoopResultBuilder]: At program point mainENTRY(lines 18 59) the Hoare annotation is: true
[2022-02-23 22:34:51,366 INFO  L861   garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true
[2022-02-23 22:34:51,366 INFO  L858   garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed.
[2022-02-23 22:34:51,367 INFO  L861   garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true
[2022-02-23 22:34:51,367 INFO  L861   garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true
[2022-02-23 22:34:51,367 INFO  L861   garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true
[2022-02-23 22:34:51,367 INFO  L858   garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed.
[2022-02-23 22:34:51,367 INFO  L854   garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))
[2022-02-23 22:34:51,367 INFO  L854   garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~b~0 .cse2) (= main_~a~0 .cse2) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))))
[2022-02-23 22:34:51,367 INFO  L854   garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))
[2022-02-23 22:34:51,368 INFO  L854   garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~b~0 .cse2) (= main_~a~0 .cse2) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))))
[2022-02-23 22:34:51,369 INFO  L854   garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))
[2022-02-23 22:34:51,369 INFO  L854   garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse3 (* main_~q~0 main_~x~0)) (.cse4 (* main_~y~0 main_~s~0))) (let ((.cse0 (= main_~b~0 (+ .cse3 .cse4))) (.cse1 (= main_~s~0 1)) (.cse2 (= main_~p~0 1))) (or (and (= main_~b~0 main_~a~0) .cse0 .cse1 (= main_~q~0 0) .cse2) (let ((.cse5 (* main_~y~0 main_~r~0)) (.cse6 (* main_~p~0 main_~x~0))) (let ((.cse7 (+ .cse5 .cse6))) (and (= (+ .cse3 main_~a~0 .cse4) (+ .cse5 main_~b~0 .cse6)) (= main_~b~0 .cse7) (= main_~a~0 .cse7) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) (and (= main_~r~0 0) .cse0 .cse1 (= main_~a~0 main_~x~0) .cse2))))
[2022-02-23 22:34:51,369 INFO  L854   garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))
[2022-02-23 22:34:51,369 INFO  L854   garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))
[2022-02-23 22:34:51,369 INFO  L858   garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed.
[2022-02-23 22:34:51,369 INFO  L858   garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed.
[2022-02-23 22:34:51,369 INFO  L858   garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed.
[2022-02-23 22:34:51,369 INFO  L858   garLoopResultBuilder]: For program point mainFINAL(lines 18 59) no Hoare annotation was computed.
[2022-02-23 22:34:51,369 INFO  L858   garLoopResultBuilder]: For program point mainEXIT(lines 18 59) no Hoare annotation was computed.
[2022-02-23 22:34:51,370 INFO  L861   garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true
[2022-02-23 22:34:51,370 INFO  L858   garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed.
[2022-02-23 22:34:51,370 INFO  L858   garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed.
[2022-02-23 22:34:51,370 INFO  L858   garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed.
[2022-02-23 22:34:51,370 INFO  L858   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2022-02-23 22:34:51,370 INFO  L858   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed.
[2022-02-23 22:34:51,373 INFO  L732         BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 22:34:51,375 INFO  L180   ceAbstractionStarter]: Computing trace abstraction results
[2022-02-23 22:34:51,391 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:51 BasicIcfg
[2022-02-23 22:34:51,391 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-23 22:34:51,392 INFO  L158              Benchmark]: Toolchain (without parser) took 8046.15ms. Allocated memory was 183.5MB in the beginning and 251.7MB in the end (delta: 68.2MB). Free memory was 125.6MB in the beginning and 208.5MB in the end (delta: -83.0MB). Peak memory consumption was 114.8MB. Max. memory is 8.0GB.
[2022-02-23 22:34:51,392 INFO  L158              Benchmark]: CDTParser took 0.14ms. Allocated memory is still 183.5MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-23 22:34:51,393 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 231.23ms. Allocated memory was 183.5MB in the beginning and 251.7MB in the end (delta: 68.2MB). Free memory was 125.3MB in the beginning and 222.7MB in the end (delta: -97.4MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB.
[2022-02-23 22:34:51,393 INFO  L158              Benchmark]: Boogie Preprocessor took 33.83ms. Allocated memory is still 251.7MB. Free memory was 222.7MB in the beginning and 221.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-23 22:34:51,394 INFO  L158              Benchmark]: RCFGBuilder took 318.53ms. Allocated memory is still 251.7MB. Free memory was 221.1MB in the beginning and 210.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-02-23 22:34:51,394 INFO  L158              Benchmark]: IcfgTransformer took 36.02ms. Allocated memory is still 251.7MB. Free memory was 210.1MB in the beginning and 208.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-23 22:34:51,395 INFO  L158              Benchmark]: TraceAbstraction took 7410.56ms. Allocated memory is still 251.7MB. Free memory was 208.0MB in the beginning and 208.5MB in the end (delta: -536.4kB). Peak memory consumption was 129.3MB. Max. memory is 8.0GB.
[2022-02-23 22:34:51,396 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.14ms. Allocated memory is still 183.5MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 231.23ms. Allocated memory was 183.5MB in the beginning and 251.7MB in the end (delta: 68.2MB). Free memory was 125.3MB in the beginning and 222.7MB in the end (delta: -97.4MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 33.83ms. Allocated memory is still 251.7MB. Free memory was 222.7MB in the beginning and 221.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 318.53ms. Allocated memory is still 251.7MB. Free memory was 221.1MB in the beginning and 210.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * IcfgTransformer took 36.02ms. Allocated memory is still 251.7MB. Free memory was 210.1MB in the beginning and 208.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * TraceAbstraction took 7410.56ms. Allocated memory is still 251.7MB. Free memory was 208.0MB in the beginning and 208.5MB in the end (delta: -536.4kB). Peak memory consumption was 129.3MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 13]: call to reach_error is unreachable
    For all program executions holds that call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 1312 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 955 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 392 IncrementalHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 357 mSDtfsCounter, 392 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 635 GetRequests, 576 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 57 PreInvPairs, 92 NumberOfFragments, 349 HoareAnnotationTreeSize, 57 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1691 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 426 NumberOfCodeBlocks, 426 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 1676 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1087 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 627/666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 35]: Loop Invariant
    Derived loop invariant: (q * x + a + y * s == y * r + b + p * x && a == y * r + p * x) && p * s == q * r + 1
RESULT: Ultimate proved your program to be correct!
[2022-02-23 22:34:51,422 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...