/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound20.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-05ce600
[2022-02-24 00:29:49,986 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-24 00:29:49,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-24 00:29:50,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-24 00:29:50,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-24 00:29:50,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-24 00:29:50,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-24 00:29:50,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-24 00:29:50,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-24 00:29:50,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-24 00:29:50,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-24 00:29:50,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-24 00:29:50,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-24 00:29:50,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-24 00:29:50,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-24 00:29:50,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-24 00:29:50,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-24 00:29:50,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-24 00:29:50,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-24 00:29:50,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-24 00:29:50,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-24 00:29:50,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-24 00:29:50,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-24 00:29:50,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-24 00:29:50,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-24 00:29:50,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-24 00:29:50,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-24 00:29:50,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-24 00:29:50,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-24 00:29:50,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-24 00:29:50,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-24 00:29:50,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-24 00:29:50,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-24 00:29:50,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-24 00:29:50,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-24 00:29:50,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-24 00:29:50,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-02-24 00:29:50,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-02-24 00:29:50,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-02-24 00:29:50,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-02-24 00:29:50,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-24 00:29:50,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf
[2022-02-24 00:29:50,107 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-24 00:29:50,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-24 00:29:50,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-24 00:29:50,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-24 00:29:50,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-24 00:29:50,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-02-24 00:29:50,110 INFO L138 SettingsManager]: * Use SBE=true
[2022-02-24 00:29:50,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-24 00:29:50,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-24 00:29:50,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-24 00:29:50,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-24 00:29:50,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 00:29:50,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-24 00:29:50,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-02-24 00:29:50,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-24 00:29:50,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-24 00:29:50,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-24 00:29:50,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-24 00:29:50,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2022-02-24 00:29:50,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-02-24 00:29:50,113 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-02-24 00:29:50,113 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-24 00:29:50,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-24 00:29:50,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-24 00:29:50,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-24 00:29:50,293 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-24 00:29:50,295 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-24 00:29:50,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound20.c
[2022-02-24 00:29:50,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f399891e/00e49666c7cf44aabbe04963dd9388b0/FLAG077d9a924
[2022-02-24 00:29:50,659 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-24 00:29:50,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound20.c
[2022-02-24 00:29:50,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f399891e/00e49666c7cf44aabbe04963dd9388b0/FLAG077d9a924
[2022-02-24 00:29:51,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f399891e/00e49666c7cf44aabbe04963dd9388b0
[2022-02-24 00:29:51,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-24 00:29:51,100 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-02-24 00:29:51,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-24 00:29:51,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-24 00:29:51,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-24 00:29:51,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad09bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51, skipping insertion in model container
[2022-02-24 00:29:51,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-24 00:29:51,131 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-24 00:29:51,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533]
[2022-02-24 00:29:51,277 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-24 00:29:51,284 INFO L203 MainTranslator]: Completed pre-run
[2022-02-24 00:29:51,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533]
[2022-02-24 00:29:51,301 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-24 00:29:51,310 INFO L208 MainTranslator]: Completed translation
[2022-02-24 00:29:51,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51 WrapperNode
[2022-02-24 00:29:51,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-24 00:29:51,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-24 00:29:51,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-24 00:29:51,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-24 00:29:51,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-24 00:29:51,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-24 00:29:51,339 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-24 00:29:51,339 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-24 00:29:51,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 00:29:51,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:29:51,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-02-24 00:29:51,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-02-24 00:29:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-24 00:29:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-24 00:29:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-24 00:29:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-24 00:29:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-24 00:29:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-24 00:29:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-24 00:29:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-24 00:29:51,429 INFO L234 CfgBuilder]: Building ICFG
[2022-02-24 00:29:51,430 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-24 00:29:51,565 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-24 00:29:51,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-24 00:29:51,569 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-24 00:29:51,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:51 BoogieIcfgContainer
[2022-02-24 00:29:51,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-24 00:29:51,571 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-02-24 00:29:51,571 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-02-24 00:29:51,588 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-02-24 00:29:51,590 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:51" (1/1) ...
[2022-02-24 00:29:51,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:29:51 BasicIcfg
[2022-02-24 00:29:51,607 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-02-24 00:29:51,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-24 00:29:51,608 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-24 00:29:51,625 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-24 00:29:51,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:29:51" (1/4) ...
[2022-02-24 00:29:51,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b94ee68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:29:51, skipping insertion in model container
[2022-02-24 00:29:51,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:51" (2/4) ...
[2022-02-24 00:29:51,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b94ee68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:29:51, skipping insertion in model container
[2022-02-24 00:29:51,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:51" (3/4) ...
[2022-02-24 00:29:51,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b94ee68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:29:51, skipping insertion in model container
[2022-02-24 00:29:51,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:29:51" (4/4) ...
[2022-02-24 00:29:51,627 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.cqvasr
[2022-02-24 00:29:51,631 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-24 00:29:51,631 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-24 00:29:51,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-24 00:29:51,698 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-02-24 00:29:51,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-24 00:29:51,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-02-24 00:29:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-24 00:29:51,726 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 00:29:51,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:29:51,727 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:29:51,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:29:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash -179702132, now seen corresponding path program 1 times
[2022-02-24 00:29:51,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:29:51,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487634668]
[2022-02-24 00:29:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:29:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 00:29:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-24 00:29:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 00:29:51,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:29:51,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487634668]
[2022-02-24 00:29:51,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487634668] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:29:51,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:29:51,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-24 00:29:51,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90369947]
[2022-02-24 00:29:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:29:51,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-24 00:29:51,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:29:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-24 00:29:51,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-24 00:29:51,937 INFO L87 Difference]: Start difference. First operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:29:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:29:52,017 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions.
[2022-02-24 00:29:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-24 00:29:52,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-02-24 00:29:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:29:52,029 INFO L225 Difference]: With dead ends: 53
[2022-02-24 00:29:52,029 INFO L226 Difference]: Without dead ends: 26
[2022-02-24 00:29:52,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-24 00:29:52,035 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:29:52,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:29:52,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2022-02-24 00:29:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2022-02-24 00:29:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-02-24 00:29:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions.
[2022-02-24 00:29:52,077 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17
[2022-02-24 00:29:52,077 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:29:52,078 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions.
[2022-02-24 00:29:52,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:29:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions.
[2022-02-24 00:29:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-24 00:29:52,080 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 00:29:52,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:29:52,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-24 00:29:52,080 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:29:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:29:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1985279762, now seen corresponding path program 1 times
[2022-02-24 00:29:52,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:29:52,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574063697]
[2022-02-24 00:29:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:29:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 00:29:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-24 00:29:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 00:29:52,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:29:52,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574063697]
[2022-02-24 00:29:52,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574063697] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:29:52,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:29:52,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-24 00:29:52,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944871420]
[2022-02-24 00:29:52,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:29:52,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-24 00:29:52,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:29:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-24 00:29:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-02-24 00:29:52,199 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:29:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:29:52,377 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions.
[2022-02-24 00:29:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-24 00:29:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-02-24 00:29:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:29:52,380 INFO L225 Difference]: With dead ends: 40
[2022-02-24 00:29:52,380 INFO L226 Difference]: Without dead ends: 38
[2022-02-24 00:29:52,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-02-24 00:29:52,386 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 00:29:52,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 39 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 00:29:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-02-24 00:29:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36.
[2022-02-24 00:29:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11)
[2022-02-24 00:29:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions.
[2022-02-24 00:29:52,407 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 17
[2022-02-24 00:29:52,407 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:29:52,407 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions.
[2022-02-24 00:29:52,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-24 00:29:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions.
[2022-02-24 00:29:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-24 00:29:52,408 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 00:29:52,408 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:29:52,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-24 00:29:52,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:29:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:29:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1146988413, now seen corresponding path program 1 times
[2022-02-24 00:29:52,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:29:52,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166595713]
[2022-02-24 00:29:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:52,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:29:52,427 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:29:52,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160514949]
[2022-02-24 00:29:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:52,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:29:52,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:29:52,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:29:52,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-24 00:29:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:52,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-24 00:29:52,475 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-24 00:29:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 00:29:52,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-24 00:29:52,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:29:52,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166595713]
[2022-02-24 00:29:52,602 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-24 00:29:52,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160514949]
[2022-02-24 00:29:52,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160514949] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:29:52,604 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:29:52,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-24 00:29:52,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063094902]
[2022-02-24 00:29:52,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:29:52,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-24 00:29:52,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:29:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-24 00:29:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-24 00:29:52,608 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-24 00:29:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:29:52,642 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions.
[2022-02-24 00:29:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-24 00:29:52,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22
[2022-02-24 00:29:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:29:52,643 INFO L225 Difference]: With dead ends: 44
[2022-02-24 00:29:52,643 INFO L226 Difference]: Without dead ends: 42
[2022-02-24 00:29:52,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-24 00:29:52,646 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:29:52,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:29:52,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-02-24 00:29:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41.
[2022-02-24 00:29:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12)
[2022-02-24 00:29:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions.
[2022-02-24 00:29:52,663 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22
[2022-02-24 00:29:52,663 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:29:52,663 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions.
[2022-02-24 00:29:52,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-24 00:29:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions.
[2022-02-24 00:29:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-02-24 00:29:52,667 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 00:29:52,667 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:29:52,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-02-24 00:29:52,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:29:52,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:29:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:29:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash -88951989, now seen corresponding path program 1 times
[2022-02-24 00:29:52,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:29:52,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372693492]
[2022-02-24 00:29:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:29:52,890 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:29:52,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207541302]
[2022-02-24 00:29:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:52,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:29:52,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:29:52,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:29:52,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-24 00:29:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:52,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-24 00:29:52,945 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-24 00:29:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-24 00:29:53,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-24 00:29:53,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:29:53,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372693492]
[2022-02-24 00:29:53,033 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-24 00:29:53,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207541302]
[2022-02-24 00:29:53,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207541302] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 00:29:53,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 00:29:53,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-24 00:29:53,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379353135]
[2022-02-24 00:29:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:29:53,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-24 00:29:53,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:29:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-24 00:29:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-24 00:29:53,035 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-02-24 00:29:53,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:29:53,061 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions.
[2022-02-24 00:29:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-24 00:29:53,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27
[2022-02-24 00:29:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:29:53,063 INFO L225 Difference]: With dead ends: 48
[2022-02-24 00:29:53,063 INFO L226 Difference]: Without dead ends: 43
[2022-02-24 00:29:53,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-24 00:29:53,064 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:29:53,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 118 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:29:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-02-24 00:29:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2022-02-24 00:29:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-02-24 00:29:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions.
[2022-02-24 00:29:53,069 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 27
[2022-02-24 00:29:53,069 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:29:53,069 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions.
[2022-02-24 00:29:53,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-02-24 00:29:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions.
[2022-02-24 00:29:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-02-24 00:29:53,070 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 00:29:53,070 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:29:53,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-02-24 00:29:53,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-02-24 00:29:53,284 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:29:53,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:29:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 196845204, now seen corresponding path program 1 times
[2022-02-24 00:29:53,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:29:53,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415149780]
[2022-02-24 00:29:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:29:53,291 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:29:53,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471003838]
[2022-02-24 00:29:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:53,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:29:53,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:29:53,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:29:53,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-24 00:29:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 00:29:53,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-02-24 00:29:53,332 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-24 00:29:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-02-24 00:29:53,430 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-24 00:29:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2022-02-24 00:29:53,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:29:53,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415149780]
[2022-02-24 00:29:53,509 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-24 00:29:53,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471003838]
[2022-02-24 00:29:53,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471003838] provided 1 perfect and 1 imperfect interpolant sequences
[2022-02-24 00:29:53,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-02-24 00:29:53,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7
[2022-02-24 00:29:53,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048554872]
[2022-02-24 00:29:53,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 00:29:53,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-24 00:29:53,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:29:53,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-24 00:29:53,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-02-24 00:29:53,510 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-02-24 00:29:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:29:53,540 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions.
[2022-02-24 00:29:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-24 00:29:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34
[2022-02-24 00:29:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:29:53,541 INFO L225 Difference]: With dead ends: 49
[2022-02-24 00:29:53,541 INFO L226 Difference]: Without dead ends: 47
[2022-02-24 00:29:53,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-02-24 00:29:53,542 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 00:29:53,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 00:29:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2022-02-24 00:29:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2022-02-24 00:29:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-02-24 00:29:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions.
[2022-02-24 00:29:53,547 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34
[2022-02-24 00:29:53,547 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:29:53,547 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions.
[2022-02-24 00:29:53,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-02-24 00:29:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions.
[2022-02-24 00:29:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-02-24 00:29:53,548 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 00:29:53,548 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 00:29:53,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-24 00:29:53,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:29:53,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 00:29:53,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 00:29:53,766 INFO L85 PathProgramCache]: Analyzing trace with hash -374953577, now seen corresponding path program 2 times
[2022-02-24 00:29:53,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-24 00:29:53,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584719485]
[2022-02-24 00:29:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 00:29:53,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 00:29:53,773 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-24 00:29:53,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294516595]
[2022-02-24 00:29:53,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-24 00:29:53,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:29:53,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 00:29:53,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-24 00:29:53,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-24 00:29:53,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-24 00:29:53,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-24 00:29:53,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-02-24 00:29:53,813 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-24 00:29:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-02-24 00:29:53,921 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-24 00:29:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-02-24 00:29:54,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-24 00:29:54,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584719485]
[2022-02-24 00:29:54,004 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-24 00:29:54,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294516595]
[2022-02-24 00:29:54,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294516595] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-24 00:29:54,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-24 00:29:54,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2022-02-24 00:29:54,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606977533]
[2022-02-24 00:29:54,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-24 00:29:54,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-24 00:29:54,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-24 00:29:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-24 00:29:54,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-02-24 00:29:54,006 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2022-02-24 00:29:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 00:29:54,132 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions.
[2022-02-24 00:29:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-24 00:29:54,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 39
[2022-02-24 00:29:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 00:29:54,133 INFO L225 Difference]: With dead ends: 55
[2022-02-24 00:29:54,133 INFO L226 Difference]: Without dead ends: 0
[2022-02-24 00:29:54,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2022-02-24 00:29:54,134 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 00:29:54,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 00:29:54,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-02-24 00:29:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-02-24 00:29:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-24 00:29:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-02-24 00:29:54,135 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39
[2022-02-24 00:29:54,135 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 00:29:54,135 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-02-24 00:29:54,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2022-02-24 00:29:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-02-24 00:29:54,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-02-24 00:29:54,137 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-24 00:29:54,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-02-24 00:29:54,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-24 00:29:54,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-02-24 00:29:54,494 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))
[2022-02-24 00:29:54,494 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2022-02-24 00:29:54,494 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2022-02-24 00:29:54,494 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2022-02-24 00:29:54,494 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true
[2022-02-24 00:29:54,494 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2022-02-24 00:29:54,494 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2022-02-24 00:29:54,494 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true
[2022-02-24 00:29:54,495 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed.
[2022-02-24 00:29:54,495 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed.
[2022-02-24 00:29:54,495 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed.
[2022-02-24 00:29:54,495 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 20 49) the Hoare annotation is: true
[2022-02-24 00:29:54,496 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true
[2022-02-24 00:29:54,496 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed.
[2022-02-24 00:29:54,496 INFO L854 garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (and (= (+ main_~t~0 main_~s~0) (+ (* main_~a~0 4) 2 (* main_~a~0 main_~a~0))) (= main_~t~0 (+ (* main_~a~0 2) 1)))
[2022-02-24 00:29:54,496 INFO L854 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (and (= (+ main_~t~0 main_~s~0) (+ (* main_~a~0 4) 2 (* main_~a~0 main_~a~0))) (= main_~t~0 (+ (* main_~a~0 2) 1)))
[2022-02-24 00:29:54,497 INFO L854 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (and (= (+ main_~t~0 main_~s~0) (+ (* main_~a~0 4) 2 (* main_~a~0 main_~a~0))) (= main_~t~0 (+ (* main_~a~0 2) 1)))
[2022-02-24 00:29:54,497 INFO L854 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (= (+ main_~t~0 main_~s~0) (+ (* main_~a~0 4) 2 (* main_~a~0 main_~a~0))) (= main_~t~0 (+ (* main_~a~0 2) 1)))
[2022-02-24 00:29:54,497 INFO L854 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (and (= (+ main_~t~0 main_~s~0) (+ (* main_~a~0 4) 2 (* main_~a~0 main_~a~0))) (= main_~t~0 (+ (* main_~a~0 2) 1)))
[2022-02-24 00:29:54,497 INFO L854 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (or (and (= (+ main_~t~0 main_~s~0) (+ (* main_~a~0 4) 2 (* main_~a~0 main_~a~0))) (= main_~t~0 (+ (* main_~a~0 2) 1))) (and (= main_~t~0 1) (= main_~s~0 1)))
[2022-02-24 00:29:54,497 INFO L854 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (and (= (+ main_~t~0 main_~s~0) (+ (* main_~a~0 4) 2 (* main_~a~0 main_~a~0))) (= main_~t~0 (+ (* main_~a~0 2) 1)))
[2022-02-24 00:29:54,497 INFO L858 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed.
[2022-02-24 00:29:54,497 INFO L858 garLoopResultBuilder]: For program point L33(lines 30 42) no Hoare annotation was computed.
[2022-02-24 00:29:54,497 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 20 49) no Hoare annotation was computed.
[2022-02-24 00:29:54,498 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 20 49) no Hoare annotation was computed.
[2022-02-24 00:29:54,498 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true
[2022-02-24 00:29:54,498 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed.
[2022-02-24 00:29:54,498 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed.
[2022-02-24 00:29:54,498 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed.
[2022-02-24 00:29:54,498 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed.
[2022-02-24 00:29:54,498 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed.
[2022-02-24 00:29:54,501 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1]
[2022-02-24 00:29:54,501 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-24 00:29:54,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:29:54 BasicIcfg
[2022-02-24 00:29:54,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-24 00:29:54,513 INFO L158 Benchmark]: Toolchain (without parser) took 3413.16ms. Allocated memory was 188.7MB in the beginning and 228.6MB in the end (delta: 39.8MB). Free memory was 137.8MB in the beginning and 105.5MB in the end (delta: 32.3MB). Peak memory consumption was 73.6MB. Max. memory is 8.0GB.
[2022-02-24 00:29:54,513 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-24 00:29:54,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.37ms. Allocated memory is still 188.7MB. Free memory was 137.7MB in the beginning and 165.0MB in the end (delta: -27.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
[2022-02-24 00:29:54,514 INFO L158 Benchmark]: Boogie Preprocessor took 25.37ms. Allocated memory is still 188.7MB. Free memory was 165.0MB in the beginning and 163.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-24 00:29:54,514 INFO L158 Benchmark]: RCFGBuilder took 231.25ms. Allocated memory is still 188.7MB. Free memory was 163.5MB in the beginning and 153.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-02-24 00:29:54,514 INFO L158 Benchmark]: IcfgTransformer took 35.70ms. Allocated memory is still 188.7MB. Free memory was 153.0MB in the beginning and 151.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-24 00:29:54,514 INFO L158 Benchmark]: TraceAbstraction took 2905.16ms. Allocated memory was 188.7MB in the beginning and 228.6MB in the end (delta: 39.8MB). Free memory was 151.4MB in the beginning and 105.5MB in the end (delta: 45.8MB). Peak memory consumption was 86.7MB. Max. memory is 8.0GB.
[2022-02-24 00:29:54,515 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 153.9MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 209.37ms. Allocated memory is still 188.7MB. Free memory was 137.7MB in the beginning and 165.0MB in the end (delta: -27.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 25.37ms. Allocated memory is still 188.7MB. Free memory was 165.0MB in the beginning and 163.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 231.25ms. Allocated memory is still 188.7MB. Free memory was 163.5MB in the beginning and 153.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 35.70ms. Allocated memory is still 188.7MB. Free memory was 153.0MB in the beginning and 151.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 2905.16ms. Allocated memory was 188.7MB in the beginning and 228.6MB in the end (delta: 39.8MB). Free memory was 151.4MB in the beginning and 105.5MB in the end (delta: 45.8MB). Peak memory consumption was 86.7MB. 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: 14]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 498 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 330 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 266 IncrementalHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 168 mSDtfsCounter, 266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 37 PreInvPairs, 58 NumberOfFragments, 161 HoareAnnotationTreeSize, 37 FomulaSimplifications, 4 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 476 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 603 SizeOfPredicates, 5 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 112/120 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: 30]: Loop Invariant
Derived loop invariant: t + s == a * 4 + 2 + a * a && t == a * 2 + 1
RESULT: Ultimate proved your program to be correct!
[2022-02-24 00:29:54,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...