/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i


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


This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788
[2021-06-01 16:36:34,670 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-06-01 16:36:34,697 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-06-01 16:36:34,698 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2021-06-01 16:36:34,707 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-06-01 16:36:34,708 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-06-01 16:36:34,708 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-06-01 16:36:34,709 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-06-01 16:36:34,710 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-06-01 16:36:34,712 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-06-01 16:36:34,713 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-06-01 16:36:34,714 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-06-01 16:36:34,715 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-06-01 16:36:34,716 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-06-01 16:36:34,724 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2021-06-01 16:36:34,725 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-06-01 16:36:34,726 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf
[2021-06-01 16:36:34,746 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-06-01 16:36:34,746 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-06-01 16:36:34,747 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-06-01 16:36:34,747 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-06-01 16:36:34,748 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-06-01 16:36:34,748 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-06-01 16:36:34,748 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-06-01 16:36:34,748 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-06-01 16:36:34,749 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-06-01 16:36:34,749 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-06-01 16:36:34,749 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-06-01 16:36:34,749 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-06-01 16:36:34,749 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-06-01 16:36:34,750 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-06-01 16:36:34,750 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-06-01 16:36:34,750 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-06-01 16:36:34,750 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-06-01 16:36:34,750 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-06-01 16:36:34,750 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-06-01 16:36:34,751 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-06-01 16:36:34,751 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-06-01 16:36:34,751 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-06-01 16:36:34,751 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-06-01 16:36:34,751 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-01 16:36:34,752 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-06-01 16:36:34,752 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-06-01 16:36:34,752 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-06-01 16:36:34,752 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-06-01 16:36:34,752 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-06-01 16:36:34,752 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-06-01 16:36:34,753 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-06-01 16:36:34,753 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-06-01 16:36:35,056 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-06-01 16:36:35,077 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-06-01 16:36:35,080 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-06-01 16:36:35,081 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-06-01 16:36:35,083 INFO  L275        PluginConnector]: CDTParser initialized
[2021-06-01 16:36:35,084 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i
[2021-06-01 16:36:35,145 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef91f685/d7610de39218415ba3bf5ddd10e93bf2/FLAG9101e445f
[2021-06-01 16:36:35,709 INFO  L306              CDTParser]: Found 1 translation units.
[2021-06-01 16:36:35,710 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i
[2021-06-01 16:36:35,724 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef91f685/d7610de39218415ba3bf5ddd10e93bf2/FLAG9101e445f
[2021-06-01 16:36:36,137 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef91f685/d7610de39218415ba3bf5ddd10e93bf2
[2021-06-01 16:36:36,141 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-06-01 16:36:36,143 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2021-06-01 16:36:36,144 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-06-01 16:36:36,144 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-06-01 16:36:36,156 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-06-01 16:36:36,157 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,158 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c2bce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36, skipping insertion in model container
[2021-06-01 16:36:36,158 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,169 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-06-01 16:36:36,210 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-06-01 16:36:36,326 WARN  L224   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i[950,963]
[2021-06-01 16:36:36,483 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-06-01 16:36:36,489 INFO  L203         MainTranslator]: Completed pre-run
[2021-06-01 16:36:36,500 WARN  L224   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i[950,963]
[2021-06-01 16:36:36,523 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-06-01 16:36:36,575 INFO  L208         MainTranslator]: Completed translation
[2021-06-01 16:36:36,576 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36 WrapperNode
[2021-06-01 16:36:36,576 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-06-01 16:36:36,577 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-06-01 16:36:36,577 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-06-01 16:36:36,577 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-06-01 16:36:36,583 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,598 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,622 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-06-01 16:36:36,623 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-06-01 16:36:36,623 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-06-01 16:36:36,623 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-06-01 16:36:36,628 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,628 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,642 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,642 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,646 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,648 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,649 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
[2021-06-01 16:36:36,663 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-06-01 16:36:36,664 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-06-01 16:36:36,664 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-06-01 16:36:36,664 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-06-01 16:36:36,664 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-01 16:36:36,730 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-06-01 16:36:36,730 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2021-06-01 16:36:36,731 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-06-01 16:36:36,731 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-06-01 16:36:36,731 INFO  L130     BoogieDeclarations]: Found specification of procedure P0
[2021-06-01 16:36:36,731 INFO  L138     BoogieDeclarations]: Found implementation of procedure P0
[2021-06-01 16:36:36,731 INFO  L130     BoogieDeclarations]: Found specification of procedure P1
[2021-06-01 16:36:36,731 INFO  L138     BoogieDeclarations]: Found implementation of procedure P1
[2021-06-01 16:36:36,731 INFO  L130     BoogieDeclarations]: Found specification of procedure P2
[2021-06-01 16:36:36,732 INFO  L138     BoogieDeclarations]: Found implementation of procedure P2
[2021-06-01 16:36:36,732 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-06-01 16:36:36,732 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2021-06-01 16:36:36,732 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-06-01 16:36:36,732 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-06-01 16:36:36,733 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-06-01 16:36:37,124 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-06-01 16:36:37,125 INFO  L299             CfgBuilder]: Removed 8 assume(true) statements.
[2021-06-01 16:36:37,127 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 04:36:37 BoogieIcfgContainer
[2021-06-01 16:36:37,127 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-06-01 16:36:37,128 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-06-01 16:36:37,128 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-06-01 16:36:37,131 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-06-01 16:36:37,131 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.06 04:36:36" (1/3) ...
[2021-06-01 16:36:37,131 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256c71be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 04:36:37, skipping insertion in model container
[2021-06-01 16:36:37,132 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 04:36:36" (2/3) ...
[2021-06-01 16:36:37,132 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256c71be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 04:36:37, skipping insertion in model container
[2021-06-01 16:36:37,132 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 04:36:37" (3/3) ...
[2021-06-01 16:36:37,135 INFO  L111   eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i
[2021-06-01 16:36:37,141 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-06-01 16:36:37,141 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-06-01 16:36:37,141 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-06-01 16:36:37,142 INFO  L471   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-06-01 16:36:37,171 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,171 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,171 WARN  L313   ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,171 WARN  L313   ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,172 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,172 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,172 WARN  L313   ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,172 WARN  L313   ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,172 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,172 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,173 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,173 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,173 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,173 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,173 WARN  L313   ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,174 WARN  L313   ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,175 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,175 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,175 WARN  L313   ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,175 WARN  L313   ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,179 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,180 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,180 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,180 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,181 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,181 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,182 WARN  L313   ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,182 WARN  L313   ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,182 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,182 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,182 WARN  L313   ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,183 WARN  L313   ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,183 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,183 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,184 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,184 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,186 WARN  L313   ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,186 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,186 WARN  L313   ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,187 WARN  L313   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,191 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,191 WARN  L313   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,191 WARN  L313   ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,191 WARN  L313   ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,193 WARN  L313   ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,193 WARN  L313   ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,193 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,193 WARN  L313   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-06-01 16:36:37,196 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-06-01 16:36:37,216 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2021-06-01 16:36:37,240 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-06-01 16:36:37,240 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-06-01 16:36:37,240 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-06-01 16:36:37,240 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-06-01 16:36:37,240 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-06-01 16:36:37,240 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-06-01 16:36:37,240 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-06-01 16:36:37,240 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
[2021-06-01 16:36:37,249 INFO  L100   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow
[2021-06-01 16:36:37,757 INFO  L122   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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)
[2021-06-01 16:36:37,802 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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)
[2021-06-01 16:36:37,849 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2021-06-01 16:36:37,849 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:37,850 INFO  L554         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 16:36:37,850 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:37,855 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:37,855 INFO  L82        PathProgramCache]: Analyzing trace with hash -1593178653, now seen corresponding path program 1 times
[2021-06-01 16:36:37,864 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:37,865 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177238484]
[2021-06-01 16:36:37,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:38,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:38,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:38,270 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:38,270 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177238484]
[2021-06-01 16:36:38,271 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177238484] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:38,272 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:38,272 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-01 16:36:38,272 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196441206]
[2021-06-01 16:36:38,276 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-01 16:36:38,277 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:38,289 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-01 16:36:38,291 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-06-01 16:36:38,323 INFO  L87              Difference]: Start difference. First operand  has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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)
[2021-06-01 16:36:38,668 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:38,668 INFO  L93              Difference]: Finished difference Result 13343 states and 46433 transitions.
[2021-06-01 16:36:38,669 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-01 16:36:38,670 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49
[2021-06-01 16:36:38,671 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:38,728 INFO  L225             Difference]: With dead ends: 13343
[2021-06-01 16:36:38,728 INFO  L226             Difference]: Without dead ends: 5048
[2021-06-01 16:36:38,729 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2021-06-01 16:36:38,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5048 states.
[2021-06-01 16:36:39,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5048.
[2021-06-01 16:36:39,075 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5048 states, 5047 states have (on average 3.408559540320983) internal successors, (17203), 5047 states have internal predecessors, (17203), 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)
[2021-06-01 16:36:39,102 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 17203 transitions.
[2021-06-01 16:36:39,103 INFO  L78                 Accepts]: Start accepts. Automaton has 5048 states and 17203 transitions. Word has length 49
[2021-06-01 16:36:39,104 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:39,104 INFO  L482      AbstractCegarLoop]: Abstraction has 5048 states and 17203 transitions.
[2021-06-01 16:36:39,105 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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)
[2021-06-01 16:36:39,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 5048 states and 17203 transitions.
[2021-06-01 16:36:39,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-06-01 16:36:39,115 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:39,115 INFO  L554         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 16:36:39,116 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-06-01 16:36:39,116 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:39,117 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:39,117 INFO  L82        PathProgramCache]: Analyzing trace with hash 2100147364, now seen corresponding path program 1 times
[2021-06-01 16:36:39,117 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:39,117 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506968795]
[2021-06-01 16:36:39,117 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:39,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:39,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:39,234 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:39,234 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506968795]
[2021-06-01 16:36:39,235 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506968795] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:39,235 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:39,235 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-01 16:36:39,235 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126806779]
[2021-06-01 16:36:39,236 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-01 16:36:39,236 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:39,237 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-01 16:36:39,237 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-06-01 16:36:39,237 INFO  L87              Difference]: Start difference. First operand 5048 states and 17203 transitions. Second operand  has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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)
[2021-06-01 16:36:39,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:39,436 INFO  L93              Difference]: Finished difference Result 5594 states and 18847 transitions.
[2021-06-01 16:36:39,437 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-01 16:36:39,437 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51
[2021-06-01 16:36:39,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:39,470 INFO  L225             Difference]: With dead ends: 5594
[2021-06-01 16:36:39,470 INFO  L226             Difference]: Without dead ends: 4334
[2021-06-01 16:36:39,472 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2021-06-01 16:36:39,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4334 states.
[2021-06-01 16:36:39,581 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4334.
[2021-06-01 16:36:39,589 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4334 states, 4333 states have (on average 3.3637202861758597) internal successors, (14575), 4333 states have internal predecessors, (14575), 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)
[2021-06-01 16:36:39,661 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 14575 transitions.
[2021-06-01 16:36:39,661 INFO  L78                 Accepts]: Start accepts. Automaton has 4334 states and 14575 transitions. Word has length 51
[2021-06-01 16:36:39,662 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:39,662 INFO  L482      AbstractCegarLoop]: Abstraction has 4334 states and 14575 transitions.
[2021-06-01 16:36:39,662 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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)
[2021-06-01 16:36:39,662 INFO  L276                IsEmpty]: Start isEmpty. Operand 4334 states and 14575 transitions.
[2021-06-01 16:36:39,673 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2021-06-01 16:36:39,674 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:39,674 INFO  L554         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 16:36:39,674 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-06-01 16:36:39,674 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:39,675 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:39,675 INFO  L82        PathProgramCache]: Analyzing trace with hash 1690028140, now seen corresponding path program 1 times
[2021-06-01 16:36:39,675 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:39,675 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488999340]
[2021-06-01 16:36:39,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:39,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:39,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:39,789 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:39,790 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488999340]
[2021-06-01 16:36:39,790 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488999340] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:39,790 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:39,790 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-01 16:36:39,790 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525244822]
[2021-06-01 16:36:39,790 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-01 16:36:39,791 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:39,792 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-01 16:36:39,793 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-06-01 16:36:39,793 INFO  L87              Difference]: Start difference. First operand 4334 states and 14575 transitions. Second operand  has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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)
[2021-06-01 16:36:39,992 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:39,992 INFO  L93              Difference]: Finished difference Result 6742 states and 22512 transitions.
[2021-06-01 16:36:39,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-01 16:36:39,994 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52
[2021-06-01 16:36:39,995 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:40,018 INFO  L225             Difference]: With dead ends: 6742
[2021-06-01 16:36:40,018 INFO  L226             Difference]: Without dead ends: 3158
[2021-06-01 16:36:40,019 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2021-06-01 16:36:40,031 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3158 states.
[2021-06-01 16:36:40,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3158.
[2021-06-01 16:36:40,095 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3158 states, 3157 states have (on average 3.3268926195755464) internal successors, (10503), 3157 states have internal predecessors, (10503), 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)
[2021-06-01 16:36:40,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 10503 transitions.
[2021-06-01 16:36:40,107 INFO  L78                 Accepts]: Start accepts. Automaton has 3158 states and 10503 transitions. Word has length 52
[2021-06-01 16:36:40,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:40,109 INFO  L482      AbstractCegarLoop]: Abstraction has 3158 states and 10503 transitions.
[2021-06-01 16:36:40,109 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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)
[2021-06-01 16:36:40,109 INFO  L276                IsEmpty]: Start isEmpty. Operand 3158 states and 10503 transitions.
[2021-06-01 16:36:40,116 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 16:36:40,117 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:40,117 INFO  L554         BasicCegarLoop]: trace histogram [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, 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]
[2021-06-01 16:36:40,117 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-06-01 16:36:40,118 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:40,119 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:40,119 INFO  L82        PathProgramCache]: Analyzing trace with hash 792894823, now seen corresponding path program 1 times
[2021-06-01 16:36:40,119 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:40,119 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74385518]
[2021-06-01 16:36:40,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:40,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:40,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:40,256 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:40,256 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74385518]
[2021-06-01 16:36:40,256 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74385518] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:40,256 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:40,257 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-01 16:36:40,257 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883435801]
[2021-06-01 16:36:40,257 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-01 16:36:40,257 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:40,258 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-01 16:36:40,259 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-06-01 16:36:40,259 INFO  L87              Difference]: Start difference. First operand 3158 states and 10503 transitions. Second operand  has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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)
[2021-06-01 16:36:40,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:40,426 INFO  L93              Difference]: Finished difference Result 3962 states and 12986 transitions.
[2021-06-01 16:36:40,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-01 16:36:40,427 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 16:36:40,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:40,455 INFO  L225             Difference]: With dead ends: 3962
[2021-06-01 16:36:40,455 INFO  L226             Difference]: Without dead ends: 2870
[2021-06-01 16:36:40,456 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2021-06-01 16:36:40,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2870 states.
[2021-06-01 16:36:40,525 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870.
[2021-06-01 16:36:40,530 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2870 states, 2869 states have (on average 3.2732659463227605) internal successors, (9391), 2869 states have internal predecessors, (9391), 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)
[2021-06-01 16:36:40,541 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 9391 transitions.
[2021-06-01 16:36:40,541 INFO  L78                 Accepts]: Start accepts. Automaton has 2870 states and 9391 transitions. Word has length 54
[2021-06-01 16:36:40,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:40,543 INFO  L482      AbstractCegarLoop]: Abstraction has 2870 states and 9391 transitions.
[2021-06-01 16:36:40,543 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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)
[2021-06-01 16:36:40,543 INFO  L276                IsEmpty]: Start isEmpty. Operand 2870 states and 9391 transitions.
[2021-06-01 16:36:40,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2021-06-01 16:36:40,550 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:40,551 INFO  L554         BasicCegarLoop]: trace histogram [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, 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]
[2021-06-01 16:36:40,551 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-06-01 16:36:40,551 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:40,554 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:40,554 INFO  L82        PathProgramCache]: Analyzing trace with hash -173034250, now seen corresponding path program 1 times
[2021-06-01 16:36:40,554 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:40,559 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136536395]
[2021-06-01 16:36:40,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:40,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:40,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:40,689 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:40,689 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136536395]
[2021-06-01 16:36:40,689 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136536395] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:40,689 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:40,689 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-06-01 16:36:40,689 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650101465]
[2021-06-01 16:36:40,690 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-01 16:36:40,691 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:40,692 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-01 16:36:40,692 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-06-01 16:36:40,692 INFO  L87              Difference]: Start difference. First operand 2870 states and 9391 transitions. Second operand  has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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)
[2021-06-01 16:36:40,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:40,847 INFO  L93              Difference]: Finished difference Result 2978 states and 9484 transitions.
[2021-06-01 16:36:40,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-06-01 16:36:40,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55
[2021-06-01 16:36:40,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:40,878 INFO  L225             Difference]: With dead ends: 2978
[2021-06-01 16:36:40,878 INFO  L226             Difference]: Without dead ends: 2078
[2021-06-01 16:36:40,879 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2021-06-01 16:36:40,885 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2078 states.
[2021-06-01 16:36:40,918 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2078.
[2021-06-01 16:36:40,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2078 states, 2077 states have (on average 3.1376986037554166) internal successors, (6517), 2077 states have internal predecessors, (6517), 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)
[2021-06-01 16:36:40,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 6517 transitions.
[2021-06-01 16:36:40,928 INFO  L78                 Accepts]: Start accepts. Automaton has 2078 states and 6517 transitions. Word has length 55
[2021-06-01 16:36:40,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:40,928 INFO  L482      AbstractCegarLoop]: Abstraction has 2078 states and 6517 transitions.
[2021-06-01 16:36:40,929 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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)
[2021-06-01 16:36:40,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 2078 states and 6517 transitions.
[2021-06-01 16:36:40,933 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2021-06-01 16:36:40,933 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:40,933 INFO  L554         BasicCegarLoop]: trace histogram [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, 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]
[2021-06-01 16:36:40,933 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-06-01 16:36:40,933 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:40,934 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:40,934 INFO  L82        PathProgramCache]: Analyzing trace with hash 2002222771, now seen corresponding path program 1 times
[2021-06-01 16:36:40,934 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:40,934 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653629512]
[2021-06-01 16:36:40,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:40,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:41,068 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:41,069 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:41,069 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653629512]
[2021-06-01 16:36:41,069 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653629512] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:41,069 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:41,070 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2021-06-01 16:36:41,070 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206499521]
[2021-06-01 16:36:41,070 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-06-01 16:36:41,070 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:41,071 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-06-01 16:36:41,071 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2021-06-01 16:36:41,071 INFO  L87              Difference]: Start difference. First operand 2078 states and 6517 transitions. Second operand  has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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)
[2021-06-01 16:36:41,231 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:41,231 INFO  L93              Difference]: Finished difference Result 1718 states and 5254 transitions.
[2021-06-01 16:36:41,232 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-06-01 16:36:41,232 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57
[2021-06-01 16:36:41,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:41,236 INFO  L225             Difference]: With dead ends: 1718
[2021-06-01 16:36:41,236 INFO  L226             Difference]: Without dead ends: 1250
[2021-06-01 16:36:41,236 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 132.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210
[2021-06-01 16:36:41,240 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1250 states.
[2021-06-01 16:36:41,257 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250.
[2021-06-01 16:36:41,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1250 states, 1249 states have (on average 3.008006405124099) internal successors, (3757), 1249 states have internal predecessors, (3757), 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)
[2021-06-01 16:36:41,262 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 3757 transitions.
[2021-06-01 16:36:41,262 INFO  L78                 Accepts]: Start accepts. Automaton has 1250 states and 3757 transitions. Word has length 57
[2021-06-01 16:36:41,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:41,263 INFO  L482      AbstractCegarLoop]: Abstraction has 1250 states and 3757 transitions.
[2021-06-01 16:36:41,263 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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)
[2021-06-01 16:36:41,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 1250 states and 3757 transitions.
[2021-06-01 16:36:41,266 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2021-06-01 16:36:41,266 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:41,267 INFO  L554         BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1]
[2021-06-01 16:36:41,267 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-06-01 16:36:41,267 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:41,267 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:41,267 INFO  L82        PathProgramCache]: Analyzing trace with hash -2022716047, now seen corresponding path program 1 times
[2021-06-01 16:36:41,267 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:41,269 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433354670]
[2021-06-01 16:36:41,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:41,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:41,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:41,402 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:41,402 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433354670]
[2021-06-01 16:36:41,405 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433354670] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:41,406 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:41,406 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-06-01 16:36:41,406 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059973921]
[2021-06-01 16:36:41,406 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-01 16:36:41,406 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:41,407 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-01 16:36:41,407 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-06-01 16:36:41,407 INFO  L87              Difference]: Start difference. First operand 1250 states and 3757 transitions. Second operand  has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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)
[2021-06-01 16:36:41,489 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:41,490 INFO  L93              Difference]: Finished difference Result 1793 states and 5391 transitions.
[2021-06-01 16:36:41,490 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-01 16:36:41,490 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61
[2021-06-01 16:36:41,491 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:41,493 INFO  L225             Difference]: With dead ends: 1793
[2021-06-01 16:36:41,493 INFO  L226             Difference]: Without dead ends: 895
[2021-06-01 16:36:41,493 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2021-06-01 16:36:41,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 895 states.
[2021-06-01 16:36:41,509 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895.
[2021-06-01 16:36:41,510 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 895 states, 894 states have (on average 2.9217002237136467) internal successors, (2612), 894 states have internal predecessors, (2612), 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)
[2021-06-01 16:36:41,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2612 transitions.
[2021-06-01 16:36:41,513 INFO  L78                 Accepts]: Start accepts. Automaton has 895 states and 2612 transitions. Word has length 61
[2021-06-01 16:36:41,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:41,513 INFO  L482      AbstractCegarLoop]: Abstraction has 895 states and 2612 transitions.
[2021-06-01 16:36:41,514 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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)
[2021-06-01 16:36:41,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 895 states and 2612 transitions.
[2021-06-01 16:36:41,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2021-06-01 16:36:41,516 INFO  L546         BasicCegarLoop]: Found error trace
[2021-06-01 16:36:41,516 INFO  L554         BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1]
[2021-06-01 16:36:41,516 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-06-01 16:36:41,516 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-06-01 16:36:41,516 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 16:36:41,517 INFO  L82        PathProgramCache]: Analyzing trace with hash 1946374265, now seen corresponding path program 2 times
[2021-06-01 16:36:41,517 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 16:36:41,517 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111257777]
[2021-06-01 16:36:41,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 16:36:41,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 16:36:41,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 16:36:41,611 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 16:36:41,611 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111257777]
[2021-06-01 16:36:41,612 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111257777] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 16:36:41,612 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 16:36:41,612 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-06-01 16:36:41,612 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333695825]
[2021-06-01 16:36:41,613 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-01 16:36:41,613 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 16:36:41,614 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-01 16:36:41,616 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-06-01 16:36:41,616 INFO  L87              Difference]: Start difference. First operand 895 states and 2612 transitions. Second operand  has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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)
[2021-06-01 16:36:41,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 16:36:41,684 INFO  L93              Difference]: Finished difference Result 841 states and 2450 transitions.
[2021-06-01 16:36:41,684 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-01 16:36:41,685 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61
[2021-06-01 16:36:41,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 16:36:41,685 INFO  L225             Difference]: With dead ends: 841
[2021-06-01 16:36:41,685 INFO  L226             Difference]: Without dead ends: 0
[2021-06-01 16:36:41,685 INFO  L810         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2021-06-01 16:36:41,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-06-01 16:36:41,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-06-01 16:36:41,686 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)
[2021-06-01 16:36:41,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-06-01 16:36:41,686 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61
[2021-06-01 16:36:41,686 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-06-01 16:36:41,686 INFO  L482      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-06-01 16:36:41,686 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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)
[2021-06-01 16:36:41,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-06-01 16:36:41,686 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2021-06-01 16:36:41,687 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-06-01 16:36:41,688 INFO  L247   ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2021-06-01 16:36:41,690 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 04:36:41 BasicIcfg
[2021-06-01 16:36:41,690 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-06-01 16:36:41,691 INFO  L168              Benchmark]: Toolchain (without parser) took 5547.89 ms. Allocated memory was 364.9 MB in the beginning and 1.0 GB in the end (delta: 666.9 MB). Free memory was 327.4 MB in the beginning and 881.1 MB in the end (delta: -553.7 MB). Peak memory consumption was 116.3 MB. Max. memory is 16.0 GB.
[2021-06-01 16:36:41,691 INFO  L168              Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 364.9 MB. Free memory was 345.6 MB in the beginning and 345.5 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB.
[2021-06-01 16:36:41,691 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 431.85 ms. Allocated memory is still 364.9 MB. Free memory was 327.2 MB in the beginning and 328.1 MB in the end (delta: -915.6 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB.
[2021-06-01 16:36:41,691 INFO  L168              Benchmark]: Boogie Procedure Inliner took 45.07 ms. Allocated memory is still 364.9 MB. Free memory was 328.1 MB in the beginning and 326.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
[2021-06-01 16:36:41,692 INFO  L168              Benchmark]: Boogie Preprocessor took 40.41 ms. Allocated memory is still 364.9 MB. Free memory was 326.0 MB in the beginning and 324.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
[2021-06-01 16:36:41,692 INFO  L168              Benchmark]: RCFGBuilder took 463.25 ms. Allocated memory is still 364.9 MB. Free memory was 323.9 MB in the beginning and 299.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB.
[2021-06-01 16:36:41,692 INFO  L168              Benchmark]: TraceAbstraction took 4562.02 ms. Allocated memory was 364.9 MB in the beginning and 1.0 GB in the end (delta: 666.9 MB). Free memory was 299.8 MB in the beginning and 881.1 MB in the end (delta: -581.3 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.0 GB.
[2021-06-01 16:36:41,694 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.16 ms. Allocated memory is still 364.9 MB. Free memory was 345.6 MB in the beginning and 345.5 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB.
 * CACSL2BoogieTranslator took 431.85 ms. Allocated memory is still 364.9 MB. Free memory was 327.2 MB in the beginning and 328.1 MB in the end (delta: -915.6 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB.
 * Boogie Procedure Inliner took 45.07 ms. Allocated memory is still 364.9 MB. Free memory was 328.1 MB in the beginning and 326.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
 * Boogie Preprocessor took 40.41 ms. Allocated memory is still 364.9 MB. Free memory was 326.0 MB in the beginning and 324.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
 * RCFGBuilder took 463.25 ms. Allocated memory is still 364.9 MB. Free memory was 323.9 MB in the beginning and 299.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB.
 * TraceAbstraction took 4562.02 ms. Allocated memory was 364.9 MB in the beginning and 1.0 GB in the end (delta: 666.9 MB). Free memory was 299.8 MB in the beginning and 881.1 MB in the end (delta: -581.3 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 18]: 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 for errors in thread instance: ULTIMATE.start with 1 thread instances
    CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4449.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 135.9ms, AutomataDifference: 1625.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 517.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 839 SDtfs, 1144 SDslu, 2690 SDs, 0 SdLazy, 310 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 233.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 888.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 819.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.9ms SsaConstructionTime, 239.3ms SatisfiabilityAnalysisTime, 861.2ms InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 1122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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
RESULT: Ultimate proved your program to be correct!
Received shutdown request...