/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/geo3-ll_unwindbound50.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-34549b5
[2022-04-06 12:05:16,936 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-04-06 12:05:16,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-06 12:05:16,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-06 12:05:16,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-06 12:05:16,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-06 12:05:16,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-06 12:05:16,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-06 12:05:17,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-06 12:05:17,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-06 12:05:17,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-04-06 12:05:17,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-06 12:05:17,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-06 12:05:17,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-06 12:05:17,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-06 12:05:17,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-06 12:05:17,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-06 12:05:17,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-06 12:05:17,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-06 12:05:17,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-06 12:05:17,007 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-06 12:05:17,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-06 12:05:17,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-06 12:05:17,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-04-06 12:05:17,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-06 12:05:17,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-06 12:05:17,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-06 12:05:17,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-06 12:05:17,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-06 12:05:17,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-06 12:05:17,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-06 12:05:17,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-06 12:05:17,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-06 12:05:17,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-06 12:05:17,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-06 12:05:17,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-06 12:05:17,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-06 12:05:17,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-06 12:05:17,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-06 12:05:17,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-04-06 12:05:17,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-04-06 12:05:17,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-04-06 12:05:17,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf
[2022-04-06 12:05:17,048 INFO L113 SettingsManager]: Loading preferences was successful
[2022-04-06 12:05:17,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-06 12:05:17,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-04-06 12:05:17,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-04-06 12:05:17,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-04-06 12:05:17,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-04-06 12:05:17,049 INFO L138 SettingsManager]: * Use SBE=true
[2022-04-06 12:05:17,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-06 12:05:17,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-04-06 12:05:17,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-04-06 12:05:17,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 12:05:17,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-06 12:05:17,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-04-06 12:05:17,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-04-06 12:05:17,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-04-06 12:05:17,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-04-06 12:05:17,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-04-06 12:05:17,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2022-04-06 12:05:17,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-04-06 12:05:17,053 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-04-06 12:05:17,053 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-04-06 12:05:17,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-06 12:05:17,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-06 12:05:17,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-06 12:05:17,272 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-04-06 12:05:17,273 INFO L275 PluginConnector]: CDTParser initialized
[2022-04-06 12:05:17,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound50.c
[2022-04-06 12:05:17,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0166a6594/9dd512a3868b4b3dbdad855fe04e988c/FLAGd432a1795
[2022-04-06 12:05:17,614 INFO L306 CDTParser]: Found 1 translation units.
[2022-04-06 12:05:17,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound50.c
[2022-04-06 12:05:17,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0166a6594/9dd512a3868b4b3dbdad855fe04e988c/FLAGd432a1795
[2022-04-06 12:05:18,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0166a6594/9dd512a3868b4b3dbdad855fe04e988c
[2022-04-06 12:05:18,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-06 12:05:18,056 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-04-06 12:05:18,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-06 12:05:18,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-06 12:05:18,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-06 12:05:18,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e572b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18, skipping insertion in model container
[2022-04-06 12:05:18,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-04-06 12:05:18,078 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-04-06 12:05:18,231 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/geo3-ll_unwindbound50.c[525,538]
[2022-04-06 12:05:18,247 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 12:05:18,253 INFO L203 MainTranslator]: Completed pre-run
[2022-04-06 12:05:18,261 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/geo3-ll_unwindbound50.c[525,538]
[2022-04-06 12:05:18,268 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 12:05:18,278 INFO L208 MainTranslator]: Completed translation
[2022-04-06 12:05:18,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18 WrapperNode
[2022-04-06 12:05:18,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-06 12:05:18,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-06 12:05:18,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-06 12:05:18,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-04-06 12:05:18,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-06 12:05:18,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-06 12:05:18,300 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-04-06 12:05:18,300 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-04-06 12:05:18,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 12:05:18,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 12:05:18,322 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)
[2022-04-06 12:05:18,341 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
[2022-04-06 12:05:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-04-06 12:05:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-06 12:05:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-04-06 12:05:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-04-06 12:05:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-04-06 12:05:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-04-06 12:05:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-04-06 12:05:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-04-06 12:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-04-06 12:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-06 12:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-04-06 12:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-04-06 12:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-04-06 12:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-04-06 12:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-04-06 12:05:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-06 12:05:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-06 12:05:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-04-06 12:05:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-04-06 12:05:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-06 12:05:18,405 INFO L234 CfgBuilder]: Building ICFG
[2022-04-06 12:05:18,406 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-06 12:05:18,552 INFO L275 CfgBuilder]: Performing block encoding
[2022-04-06 12:05:18,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-06 12:05:18,556 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-04-06 12:05:18,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:05:18 BoogieIcfgContainer
[2022-04-06 12:05:18,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-06 12:05:18,558 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-04-06 12:05:18,558 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-04-06 12:05:18,572 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-04-06 12:05:18,574 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:05:18" (1/1) ...
[2022-04-06 12:05:18,575 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR
[2022-04-06 12:05:18,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:05:18 BasicIcfg
[2022-04-06 12:05:18,586 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-04-06 12:05:18,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-06 12:05:18,616 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-04-06 12:05:18,618 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-04-06 12:05:18,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 12:05:18" (1/4) ...
[2022-04-06 12:05:18,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127ac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:05:18, skipping insertion in model container
[2022-04-06 12:05:18,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:05:18" (2/4) ...
[2022-04-06 12:05:18,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127ac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:05:18, skipping insertion in model container
[2022-04-06 12:05:18,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:05:18" (3/4) ...
[2022-04-06 12:05:18,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127ac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 12:05:18, skipping insertion in model container
[2022-04-06 12:05:18,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:05:18" (4/4) ...
[2022-04-06 12:05:18,620 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound50.cqvasr
[2022-04-06 12:05:18,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-04-06 12:05:18,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-04-06 12:05:18,677 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-06 12:05:18,685 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-06 12:05:18,686 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-04-06 12:05:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-04-06 12:05:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-04-06 12:05:18,707 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 12:05:18,707 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 12:05:18,708 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 12:05:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 12:05:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times
[2022-04-06 12:05:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 12:05:18,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797986292]
[2022-04-06 12:05:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 12:05:18,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 12:05:18,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509163405]
[2022-04-06 12:05:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:18,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:18,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 12:05:18,818 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)
[2022-04-06 12:05:18,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-04-06 12:05:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 12:05:18,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-04-06 12:05:18,892 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 12:05:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 12:05:18,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 12:05:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 12:05:18,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797986292]
[2022-04-06 12:05:18,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 12:05:18,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509163405]
[2022-04-06 12:05:18,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509163405] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 12:05:18,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 12:05:18,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-06 12:05:18,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100835575]
[2022-04-06 12:05:18,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 12:05:18,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-04-06 12:05:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 12:05:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-04-06 12:05:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-06 12:05:18,959 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 12:05:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 12:05:18,976 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions.
[2022-04-06 12:05:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-04-06 12:05:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2022-04-06 12:05:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 12:05:18,983 INFO L225 Difference]: With dead ends: 38
[2022-04-06 12:05:18,984 INFO L226 Difference]: Without dead ends: 17
[2022-04-06 12:05:18,986 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-06 12:05:18,989 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 12:05:18,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 12:05:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-04-06 12:05:19,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2022-04-06 12:05:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-04-06 12:05:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2022-04-06 12:05:19,015 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11
[2022-04-06 12:05:19,015 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 12:05:19,015 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2022-04-06 12:05:19,016 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 12:05:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2022-04-06 12:05:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-04-06 12:05:19,018 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 12:05:19,018 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 12:05:19,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-04-06 12:05:19,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2022-04-06 12:05:19,236 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 12:05:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 12:05:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times
[2022-04-06 12:05:19,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 12:05:19,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711441075]
[2022-04-06 12:05:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 12:05:19,244 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 12:05:19,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546606729]
[2022-04-06 12:05:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 12:05:19,248 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)
[2022-04-06 12:05:19,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-04-06 12:05:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 12:05:19,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-04-06 12:05:19,299 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 12:05:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 12:05:19,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 12:05:19,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 12:05:19,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711441075]
[2022-04-06 12:05:19,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 12:05:19,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546606729]
[2022-04-06 12:05:19,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546606729] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 12:05:19,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 12:05:19,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 12:05:19,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377123473]
[2022-04-06 12:05:19,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 12:05:19,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-04-06 12:05:19,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 12:05:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-04-06 12:05:19,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 12:05:19,389 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 12:05:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 12:05:19,399 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions.
[2022-04-06 12:05:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-04-06 12:05:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-04-06 12:05:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 12:05:19,400 INFO L225 Difference]: With dead ends: 26
[2022-04-06 12:05:19,400 INFO L226 Difference]: Without dead ends: 19
[2022-04-06 12:05:19,400 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 12:05:19,401 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 12:05:19,401 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 12:05:19,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-04-06 12:05:19,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2022-04-06 12:05:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-04-06 12:05:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2022-04-06 12:05:19,405 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12
[2022-04-06 12:05:19,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 12:05:19,405 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2022-04-06 12:05:19,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 12:05:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2022-04-06 12:05:19,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-04-06 12:05:19,406 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 12:05:19,406 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 12:05:19,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-04-06 12:05:19,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2022-04-06 12:05:19,620 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 12:05:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 12:05:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times
[2022-04-06 12:05:19,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 12:05:19,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560061943]
[2022-04-06 12:05:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 12:05:19,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 12:05:19,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252774293]
[2022-04-06 12:05:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:19,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:19,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 12:05:19,637 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)
[2022-04-06 12:05:19,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-04-06 12:05:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 12:05:19,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-04-06 12:05:19,673 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 12:05:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 12:05:19,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 12:05:19,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 12:05:19,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560061943]
[2022-04-06 12:05:19,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 12:05:19,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252774293]
[2022-04-06 12:05:19,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252774293] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 12:05:19,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 12:05:19,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-04-06 12:05:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822710647]
[2022-04-06 12:05:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 12:05:19,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-04-06 12:05:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 12:05:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-04-06 12:05:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-04-06 12:05:19,791 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 12:05:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 12:05:19,826 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions.
[2022-04-06 12:05:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-04-06 12:05:19,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-04-06 12:05:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 12:05:19,827 INFO L225 Difference]: With dead ends: 28
[2022-04-06 12:05:19,827 INFO L226 Difference]: Without dead ends: 25
[2022-04-06 12:05:19,827 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-04-06 12:05:19,828 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 12:05:19,828 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 12:05:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-04-06 12:05:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-04-06 12:05:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-04-06 12:05:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2022-04-06 12:05:19,836 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12
[2022-04-06 12:05:19,836 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 12:05:19,836 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2022-04-06 12:05:19,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 12:05:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2022-04-06 12:05:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-04-06 12:05:19,837 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 12:05:19,837 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 12:05:19,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-04-06 12:05:20,057 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:20,057 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 12:05:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 12:05:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times
[2022-04-06 12:05:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 12:05:20,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733077214]
[2022-04-06 12:05:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 12:05:20,069 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 12:05:20,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055988886]
[2022-04-06 12:05:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:20,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:20,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 12:05:20,076 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)
[2022-04-06 12:05:20,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-04-06 12:05:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 12:05:20,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-04-06 12:05:20,127 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 12:05:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 12:05:20,207 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 12:05:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 12:05:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 12:05:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733077214]
[2022-04-06 12:05:20,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 12:05:20,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055988886]
[2022-04-06 12:05:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055988886] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 12:05:20,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-04-06 12:05:20,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2022-04-06 12:05:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814318689]
[2022-04-06 12:05:20,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-04-06 12:05:20,319 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-04-06 12:05:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 12:05:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-04-06 12:05:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2022-04-06 12:05:20,319 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2022-04-06 12:05:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 12:05:20,380 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions.
[2022-04-06 12:05:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-04-06 12:05:20,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20
[2022-04-06 12:05:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 12:05:20,381 INFO L225 Difference]: With dead ends: 56
[2022-04-06 12:05:20,381 INFO L226 Difference]: Without dead ends: 49
[2022-04-06 12:05:20,382 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2022-04-06 12:05:20,383 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 12:05:20,384 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 72 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 12:05:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2022-04-06 12:05:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45.
[2022-04-06 12:05:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-04-06 12:05:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions.
[2022-04-06 12:05:20,390 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20
[2022-04-06 12:05:20,390 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 12:05:20,390 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions.
[2022-04-06 12:05:20,390 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2022-04-06 12:05:20,390 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions.
[2022-04-06 12:05:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-04-06 12:05:20,391 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 12:05:20,391 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 12:05:20,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-04-06 12:05:20,595 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:20,595 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 12:05:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 12:05:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times
[2022-04-06 12:05:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 12:05:20,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199750603]
[2022-04-06 12:05:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 12:05:20,603 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 12:05:20,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062478234]
[2022-04-06 12:05:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 12:05:20,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 12:05:20,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 12:05:20,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-04-06 12:05:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 12:05:20,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-04-06 12:05:20,641 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 12:05:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 12:05:20,813 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 12:05:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 12:05:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 12:05:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199750603]
[2022-04-06 12:05:21,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 12:05:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062478234]
[2022-04-06 12:05:21,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062478234] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 12:05:21,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-04-06 12:05:21,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2022-04-06 12:05:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126603961]
[2022-04-06 12:05:21,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-04-06 12:05:21,099 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-04-06 12:05:21,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 12:05:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-04-06 12:05:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2022-04-06 12:05:21,100 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2022-04-06 12:05:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 12:05:21,430 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions.
[2022-04-06 12:05:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-04-06 12:05:21,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20
[2022-04-06 12:05:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 12:05:21,431 INFO L225 Difference]: With dead ends: 45
[2022-04-06 12:05:21,431 INFO L226 Difference]: Without dead ends: 0
[2022-04-06 12:05:21,432 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2022-04-06 12:05:21,432 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-04-06 12:05:21,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-04-06 12:05:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-04-06 12:05:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-04-06 12:05:21,433 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)
[2022-04-06 12:05:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-04-06 12:05:21,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20
[2022-04-06 12:05:21,434 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 12:05:21,434 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-04-06 12:05:21,434 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2022-04-06 12:05:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-04-06 12:05:21,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-04-06 12:05:21,436 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-04-06 12:05:21,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2022-04-06 12:05:21,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 12:05:21,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-04-06 12:05:21,799 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true
[2022-04-06 12:05:21,799 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2022-04-06 12:05:21,799 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2022-04-06 12:05:21,799 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2022-04-06 12:05:21,800 INFO L878 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0)
[2022-04-06 12:05:21,800 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2022-04-06 12:05:21,800 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2022-04-06 12:05:21,800 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 22 46) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (<= ~counter~0 0))
[2022-04-06 12:05:21,800 INFO L878 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)))
[2022-04-06 12:05:21,800 INFO L878 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)))
[2022-04-06 12:05:21,800 INFO L882 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed.
[2022-04-06 12:05:21,800 INFO L882 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed.
[2022-04-06 12:05:21,800 INFO L878 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)))
[2022-04-06 12:05:21,800 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 22 46) no Hoare annotation was computed.
[2022-04-06 12:05:21,801 INFO L882 garLoopResultBuilder]: For program point L35-1(lines 34 43) no Hoare annotation was computed.
[2022-04-06 12:05:21,801 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 22 46) no Hoare annotation was computed.
[2022-04-06 12:05:21,801 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true
[2022-04-06 12:05:21,801 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed.
[2022-04-06 12:05:21,801 INFO L882 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed.
[2022-04-06 12:05:21,801 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed.
[2022-04-06 12:05:21,801 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed.
[2022-04-06 12:05:21,801 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed.
[2022-04-06 12:05:21,804 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2022-04-06 12:05:21,805 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-04-06 12:05:21,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 12:05:21 BasicIcfg
[2022-04-06 12:05:21,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-04-06 12:05:21,814 INFO L158 Benchmark]: Toolchain (without parser) took 3757.96ms. Allocated memory was 189.8MB in the beginning and 233.8MB in the end (delta: 44.0MB). Free memory was 138.8MB in the beginning and 182.4MB in the end (delta: -43.6MB). Peak memory consumption was 1.2MB. Max. memory is 8.0GB.
[2022-04-06 12:05:21,814 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-04-06 12:05:21,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.41ms. Allocated memory is still 189.8MB. Free memory was 138.5MB in the beginning and 167.5MB in the end (delta: -29.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB.
[2022-04-06 12:05:21,815 INFO L158 Benchmark]: Boogie Preprocessor took 19.48ms. Allocated memory is still 189.8MB. Free memory was 167.5MB in the beginning and 166.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-04-06 12:05:21,815 INFO L158 Benchmark]: RCFGBuilder took 257.58ms. Allocated memory is still 189.8MB. Free memory was 166.0MB in the beginning and 155.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-04-06 12:05:21,815 INFO L158 Benchmark]: IcfgTransformer took 27.93ms. Allocated memory is still 189.8MB. Free memory was 155.5MB in the beginning and 154.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-04-06 12:05:21,816 INFO L158 Benchmark]: TraceAbstraction took 3198.57ms. Allocated memory was 189.8MB in the beginning and 233.8MB in the end (delta: 44.0MB). Free memory was 153.9MB in the beginning and 182.4MB in the end (delta: -28.5MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB.
[2022-04-06 12:05:21,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 221.41ms. Allocated memory is still 189.8MB. Free memory was 138.5MB in the beginning and 167.5MB in the end (delta: -29.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 19.48ms. Allocated memory is still 189.8MB. Free memory was 167.5MB in the beginning and 166.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 257.58ms. Allocated memory is still 189.8MB. Free memory was 166.0MB in the beginning and 155.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 27.93ms. Allocated memory is still 189.8MB. Free memory was 155.5MB in the beginning and 154.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 3198.57ms. Allocated memory was 189.8MB in the beginning and 233.8MB in the end (delta: 44.0MB). Free memory was 153.9MB in the beginning and 182.4MB in the end (delta: -28.5MB). Peak memory consumption was 16.6MB. 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: 17]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 294 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 201 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 93 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 19 PreInvPairs, 32 NumberOfFragments, 62 HoareAnnotationTreeSize, 19 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 147 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 372 SizeOfPredicates, 6 NumberOfNonLiveVariables, 443 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 9/18 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: 34]: Loop Invariant
Derived loop invariant: !(\old(counter) <= 0) || y * az + x == z * x + a
RESULT: Ultimate proved your program to be correct!
[2022-04-06 12:05:21,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...