/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/loop-invariants/odd.c


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


This is Ultimate 0.2.2-dev-b030c9e
[2022-03-20 09:04:29,337 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-03-20 09:04:29,338 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2022-03-20 09:04:29,372 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-03-20 09:04:29,373 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-03-20 09:04:29,374 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-03-20 09:04:29,379 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2022-03-20 09:04:29,380 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-03-20 09:04:29,381 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-03-20 09:04:29,381 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-03-20 09:04:29,382 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-03-20 09:04:29,387 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-03-20 09:04:29,392 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-03-20 09:04:29,397 INFO  L181        SettingsManager]: Resetting HornVerifier preferences to default values
[2022-03-20 09:04:29,400 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-03-20 09:04:29,402 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-03-20 09:04:29,403 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-03-20 09:04:29,405 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-03-20 09:04:29,406 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-03-20 09:04:29,406 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-03-20 09:04:29,406 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-03-20 09:04:29,407 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-03-20 09:04:29,407 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-03-20 09:04:29,408 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-03-20 09:04:29,408 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-03-20 09:04:29,408 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-03-20 09:04:29,409 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-03-20 09:04:29,409 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-03-20 09:04:29,410 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-03-20 09:04:29,410 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-03-20 09:04:29,410 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-03-20 09:04:29,410 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-03-20 09:04:29,417 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-03-20 09:04:29,417 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf
[2022-03-20 09:04:29,438 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-03-20 09:04:29,439 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-03-20 09:04:29,439 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-03-20 09:04:29,439 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-03-20 09:04:29,440 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-03-20 09:04:29,440 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-03-20 09:04:29,440 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-03-20 09:04:29,440 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-03-20 09:04:29,440 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-03-20 09:04:29,441 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-03-20 09:04:29,441 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-03-20 09:04:29,441 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-03-20 09:04:29,441 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-03-20 09:04:29,441 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-03-20 09:04:29,441 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-03-20 09:04:29,441 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-03-20 09:04:29,441 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-20 09:04:29,442 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-03-20 09:04:29,442 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-03-20 09:04:29,443 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-03-20 09:04:29,443 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-03-20 09:04:29,443 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-03-20 09:04:29,444 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-03-20 09:04:29,605 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-03-20 09:04:29,625 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-03-20 09:04:29,627 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-03-20 09:04:29,627 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-03-20 09:04:29,628 INFO  L275        PluginConnector]: CDTParser initialized
[2022-03-20 09:04:29,629 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c
[2022-03-20 09:04:29,670 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3581e75/7d394c598ae44c0b8e3961cfce609eef/FLAGd97a308d9
[2022-03-20 09:04:30,006 INFO  L306              CDTParser]: Found 1 translation units.
[2022-03-20 09:04:30,007 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c
[2022-03-20 09:04:30,011 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3581e75/7d394c598ae44c0b8e3961cfce609eef/FLAGd97a308d9
[2022-03-20 09:04:30,451 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3581e75/7d394c598ae44c0b8e3961cfce609eef
[2022-03-20 09:04:30,453 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-03-20 09:04:30,454 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-03-20 09:04:30,456 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-03-20 09:04:30,456 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-03-20 09:04:30,459 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-03-20 09:04:30,459 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,460 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8a181d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30, skipping insertion in model container
[2022-03-20 09:04:30,460 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,464 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-03-20 09:04:30,472 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-03-20 09:04:30,567 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c[350,363]
[2022-03-20 09:04:30,584 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-03-20 09:04:30,589 INFO  L203         MainTranslator]: Completed pre-run
[2022-03-20 09:04:30,596 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c[350,363]
[2022-03-20 09:04:30,597 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-03-20 09:04:30,605 INFO  L208         MainTranslator]: Completed translation
[2022-03-20 09:04:30,605 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30 WrapperNode
[2022-03-20 09:04:30,605 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-03-20 09:04:30,607 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-03-20 09:04:30,607 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-03-20 09:04:30,607 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-03-20 09:04:30,622 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,622 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,628 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,629 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,631 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,634 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,634 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,642 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-03-20 09:04:30,642 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-03-20 09:04:30,642 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-03-20 09:04:30,642 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-03-20 09:04:30,643 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-20 09:04:30,656 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-20 09:04:30,664 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)
[2022-03-20 09:04:30,672 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
[2022-03-20 09:04:30,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-03-20 09:04:30,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-03-20 09:04:30,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2022-03-20 09:04:30,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-03-20 09:04:30,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2022-03-20 09:04:30,690 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2022-03-20 09:04:30,690 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-03-20 09:04:30,690 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-03-20 09:04:30,691 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-03-20 09:04:30,733 INFO  L234             CfgBuilder]: Building ICFG
[2022-03-20 09:04:30,734 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-03-20 09:04:30,798 INFO  L275             CfgBuilder]: Performing block encoding
[2022-03-20 09:04:30,802 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-03-20 09:04:30,802 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-03-20 09:04:30,803 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:04:30 BoogieIcfgContainer
[2022-03-20 09:04:30,803 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-03-20 09:04:30,804 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-03-20 09:04:30,804 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-03-20 09:04:30,805 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-03-20 09:04:30,807 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:04:30" (1/1) ...
[2022-03-20 09:04:30,808 INFO  L168   ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR
[2022-03-20 09:04:30,816 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:04:30 BasicIcfg
[2022-03-20 09:04:30,816 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-03-20 09:04:30,818 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-03-20 09:04:30,818 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-03-20 09:04:30,827 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-03-20 09:04:30,827 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 09:04:30" (1/4) ...
[2022-03-20 09:04:30,828 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de17ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:04:30, skipping insertion in model container
[2022-03-20 09:04:30,828 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:30" (2/4) ...
[2022-03-20 09:04:30,828 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de17ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:04:30, skipping insertion in model container
[2022-03-20 09:04:30,828 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:04:30" (3/4) ...
[2022-03-20 09:04:30,828 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de17ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:04:30, skipping insertion in model container
[2022-03-20 09:04:30,829 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:04:30" (4/4) ...
[2022-03-20 09:04:30,829 INFO  L111   eAbstractionObserver]: Analyzing ICFG odd.cqvasr
[2022-03-20 09:04:30,832 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-03-20 09:04:30,832 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-03-20 09:04:30,866 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-03-20 09:04:30,879 INFO  L340      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
[2022-03-20 09:04:30,879 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-03-20 09:04:30,890 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-03-20 09:04:30,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-03-20 09:04:30,893 INFO  L491         BasicCegarLoop]: Found error trace
[2022-03-20 09:04:30,893 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-20 09:04:30,894 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-20 09:04:30,897 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-20 09:04:30,897 INFO  L85        PathProgramCache]: Analyzing trace with hash -487068095, now seen corresponding path program 1 times
[2022-03-20 09:04:30,903 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-20 09:04:30,903 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296312803]
[2022-03-20 09:04:30,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-20 09:04:30,904 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-20 09:04:30,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-20 09:04:31,035 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-03-20 09:04:31,038 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-20 09:04:31,051 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-20 09:04:31,051 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-20 09:04:31,051 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296312803]
[2022-03-20 09:04:31,052 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296312803] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-20 09:04:31,052 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-20 09:04:31,052 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-03-20 09:04:31,053 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038926067]
[2022-03-20 09:04:31,054 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-20 09:04:31,056 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-03-20 09:04:31,057 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-20 09:04:31,077 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-03-20 09:04:31,077 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-20 09:04:31,078 INFO  L87              Difference]: Start difference. First operand  has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-20 09:04:31,114 INFO  L93              Difference]: Finished difference Result 32 states and 35 transitions.
[2022-03-20 09:04:31,116 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-20 09:04:31,117 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2022-03-20 09:04:31,118 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-20 09:04:31,121 INFO  L225             Difference]: With dead ends: 32
[2022-03-20 09:04:31,121 INFO  L226             Difference]: Without dead ends: 13
[2022-03-20 09:04:31,123 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-20 09:04:31,126 INFO  L913         BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-20 09:04:31,126 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-20 09:04:31,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2022-03-20 09:04:31,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2022-03-20 09:04:31,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2022-03-20 09:04:31,163 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11
[2022-03-20 09:04:31,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-03-20 09:04:31,164 INFO  L478      AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2022-03-20 09:04:31,165 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2022-03-20 09:04:31,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-03-20 09:04:31,166 INFO  L491         BasicCegarLoop]: Found error trace
[2022-03-20 09:04:31,166 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-20 09:04:31,166 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-03-20 09:04:31,166 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-20 09:04:31,168 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-20 09:04:31,169 INFO  L85        PathProgramCache]: Analyzing trace with hash 2110189820, now seen corresponding path program 1 times
[2022-03-20 09:04:31,169 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-20 09:04:31,169 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94687866]
[2022-03-20 09:04:31,169 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-20 09:04:31,170 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-20 09:04:31,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-20 09:04:31,278 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-03-20 09:04:31,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-20 09:04:31,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-20 09:04:31,284 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-20 09:04:31,284 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94687866]
[2022-03-20 09:04:31,285 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94687866] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-20 09:04:31,285 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-20 09:04:31,285 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-20 09:04:31,285 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821390940]
[2022-03-20 09:04:31,285 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-20 09:04:31,287 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-03-20 09:04:31,287 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-20 09:04:31,288 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-03-20 09:04:31,288 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-03-20 09:04:31,288 INFO  L87              Difference]: Start difference. First operand 13 states and 13 transitions. Second operand  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-20 09:04:31,351 INFO  L93              Difference]: Finished difference Result 20 states and 20 transitions.
[2022-03-20 09:04:31,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-03-20 09:04:31,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-03-20 09:04:31,352 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-20 09:04:31,353 INFO  L225             Difference]: With dead ends: 20
[2022-03-20 09:04:31,353 INFO  L226             Difference]: Without dead ends: 15
[2022-03-20 09:04:31,353 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2022-03-20 09:04:31,354 INFO  L913         BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-20 09:04:31,354 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-20 09:04:31,355 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-03-20 09:04:31,357 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2022-03-20 09:04:31,357 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,358 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2022-03-20 09:04:31,358 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12
[2022-03-20 09:04:31,358 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-03-20 09:04:31,358 INFO  L478      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2022-03-20 09:04:31,358 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2022-03-20 09:04:31,359 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-03-20 09:04:31,359 INFO  L491         BasicCegarLoop]: Found error trace
[2022-03-20 09:04:31,359 INFO  L499         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-20 09:04:31,359 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-03-20 09:04:31,359 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-20 09:04:31,359 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-20 09:04:31,360 INFO  L85        PathProgramCache]: Analyzing trace with hash 1523776447, now seen corresponding path program 1 times
[2022-03-20 09:04:31,360 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-20 09:04:31,360 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992084257]
[2022-03-20 09:04:31,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-20 09:04:31,360 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-20 09:04:31,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-20 09:04:31,442 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-03-20 09:04:31,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-20 09:04:31,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-20 09:04:31,452 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-20 09:04:31,452 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992084257]
[2022-03-20 09:04:31,453 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992084257] provided 0 perfect and 1 imperfect interpolant sequences
[2022-03-20 09:04:31,453 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102993244]
[2022-03-20 09:04:31,453 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-20 09:04:31,453 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-20 09:04:31,453 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-20 09:04:31,455 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)
[2022-03-20 09:04:31,456 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-03-20 09:04:31,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-20 09:04:31,494 INFO  L263         TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-03-20 09:04:31,497 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-03-20 09:04:31,567 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-20 09:04:31,567 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-03-20 09:04:31,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-03-20 09:04:31,638 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [102993244] provided 1 perfect and 1 imperfect interpolant sequences
[2022-03-20 09:04:31,638 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2022-03-20 09:04:31,638 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 12
[2022-03-20 09:04:31,641 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506524583]
[2022-03-20 09:04:31,641 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-20 09:04:31,642 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-03-20 09:04:31,643 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-20 09:04:31,643 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-03-20 09:04:31,644 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2022-03-20 09:04:31,644 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-20 09:04:31,662 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2022-03-20 09:04:31,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-03-20 09:04:31,663 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2022-03-20 09:04:31,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-20 09:04:31,663 INFO  L225             Difference]: With dead ends: 15
[2022-03-20 09:04:31,663 INFO  L226             Difference]: Without dead ends: 0
[2022-03-20 09:04:31,664 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2022-03-20 09:04:31,666 INFO  L913         BasicCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-20 09:04:31,668 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-20 09:04:31,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-03-20 09:04:31,670 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-03-20 09:04:31,670 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)
[2022-03-20 09:04:31,670 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-03-20 09:04:31,670 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14
[2022-03-20 09:04:31,670 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-03-20 09:04:31,670 INFO  L478      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-03-20 09:04:31,670 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-20 09:04:31,671 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-03-20 09:04:31,671 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2022-03-20 09:04:31,676 INFO  L788   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-03-20 09:04:31,702 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-03-20 09:04:31,882 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-20 09:04:31,884 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-03-20 09:04:31,909 INFO  L878   garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))
[2022-03-20 09:04:31,909 INFO  L882   garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2022-03-20 09:04:31,910 INFO  L882   garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2022-03-20 09:04:31,910 INFO  L885   garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2022-03-20 09:04:31,910 INFO  L885   garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true
[2022-03-20 09:04:31,910 INFO  L882   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2022-03-20 09:04:31,910 INFO  L882   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2022-03-20 09:04:31,910 INFO  L885   garLoopResultBuilder]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true
[2022-03-20 09:04:31,911 INFO  L878   garLoopResultBuilder]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= (+ (* (div main_~x~0 2) 2) 1) main_~x~0)
[2022-03-20 09:04:31,911 INFO  L878   garLoopResultBuilder]: At program point L13-4(lines 13 15) the Hoare annotation is: (<= (+ (* (div main_~x~0 2) 2) 1) main_~x~0)
[2022-03-20 09:04:31,911 INFO  L882   garLoopResultBuilder]: For program point L13-1(lines 13 15) no Hoare annotation was computed.
[2022-03-20 09:04:31,911 INFO  L882   garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed.
[2022-03-20 09:04:31,911 INFO  L882   garLoopResultBuilder]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed.
[2022-03-20 09:04:31,911 INFO  L882   garLoopResultBuilder]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed.
[2022-03-20 09:04:31,911 INFO  L885   garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true
[2022-03-20 09:04:31,911 INFO  L882   garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed.
[2022-03-20 09:04:31,911 INFO  L882   garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed.
[2022-03-20 09:04:31,912 INFO  L882   garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed.
[2022-03-20 09:04:31,912 INFO  L882   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed.
[2022-03-20 09:04:31,912 INFO  L882   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed.
[2022-03-20 09:04:31,917 INFO  L719         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-03-20 09:04:31,919 INFO  L180   ceAbstractionStarter]: Computing trace abstraction results
[2022-03-20 09:04:31,935 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:04:31 BasicIcfg
[2022-03-20 09:04:31,935 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-03-20 09:04:31,936 INFO  L158              Benchmark]: Toolchain (without parser) took 1481.16ms. Allocated memory was 188.7MB in the beginning and 262.1MB in the end (delta: 73.4MB). Free memory was 130.0MB in the beginning and 168.4MB in the end (delta: -38.3MB). Peak memory consumption was 33.7MB. Max. memory is 8.0GB.
[2022-03-20 09:04:31,936 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 146.1MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-03-20 09:04:31,936 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 149.12ms. Allocated memory was 188.7MB in the beginning and 262.1MB in the end (delta: 73.4MB). Free memory was 129.8MB in the beginning and 234.4MB in the end (delta: -104.6MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB.
[2022-03-20 09:04:31,937 INFO  L158              Benchmark]: Boogie Preprocessor took 34.82ms. Allocated memory is still 262.1MB. Free memory was 234.4MB in the beginning and 233.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-03-20 09:04:31,937 INFO  L158              Benchmark]: RCFGBuilder took 161.23ms. Allocated memory is still 262.1MB. Free memory was 233.4MB in the beginning and 223.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-03-20 09:04:31,937 INFO  L158              Benchmark]: IcfgTransformer took 12.44ms. Allocated memory is still 262.1MB. Free memory was 223.4MB in the beginning and 222.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-03-20 09:04:31,937 INFO  L158              Benchmark]: TraceAbstraction took 1117.68ms. Allocated memory is still 262.1MB. Free memory was 221.3MB in the beginning and 168.4MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB.
[2022-03-20 09:04:31,939 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 146.1MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 149.12ms. Allocated memory was 188.7MB in the beginning and 262.1MB in the end (delta: 73.4MB). Free memory was 129.8MB in the beginning and 234.4MB in the end (delta: -104.6MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 34.82ms. Allocated memory is still 262.1MB. Free memory was 234.4MB in the beginning and 233.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * RCFGBuilder took 161.23ms. Allocated memory is still 262.1MB. Free memory was 233.4MB in the beginning and 223.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * IcfgTransformer took 12.44ms. Allocated memory is still 262.1MB. Free memory was 223.4MB in the beginning and 222.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * TraceAbstraction took 1117.68ms. Allocated memory is still 262.1MB. Free memory was 221.3MB in the beginning and 168.4MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. 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: 7]: 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 29 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 1 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 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: 13]: Loop Invariant
    Derived loop invariant: x / 2 * 2 + 1 <= x
RESULT: Ultimate proved your program to be correct!
[2022-03-20 09:04:31,971 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...