/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound5.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-34549b5
[2022-04-06 06:58:43,093 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-04-06 06:58:43,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-06 06:58:43,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-06 06:58:43,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-06 06:58:43,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-06 06:58:43,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-06 06:58:43,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-06 06:58:43,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-06 06:58:43,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-06 06:58:43,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-04-06 06:58:43,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-06 06:58:43,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-06 06:58:43,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-06 06:58:43,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-06 06:58:43,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-06 06:58:43,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-06 06:58:43,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-06 06:58:43,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-06 06:58:43,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-06 06:58:43,189 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-06 06:58:43,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-06 06:58:43,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-06 06:58:43,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-04-06 06:58:43,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-06 06:58:43,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-06 06:58:43,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-06 06:58:43,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-06 06:58:43,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-06 06:58:43,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-06 06:58:43,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-06 06:58:43,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-06 06:58:43,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-06 06:58:43,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-06 06:58:43,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-06 06:58:43,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-06 06:58:43,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-06 06:58:43,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-06 06:58:43,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-06 06:58:43,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-04-06 06:58:43,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-04-06 06:58:43,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-04-06 06:58:43,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2022-04-06 06:58:43,210 INFO L113 SettingsManager]: Loading preferences was successful
[2022-04-06 06:58:43,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-06 06:58:43,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-06 06:58:43,211 INFO L138 SettingsManager]: * sizeof long=4
[2022-04-06 06:58:43,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-04-06 06:58:43,211 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-04-06 06:58:43,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-04-06 06:58:43,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-04-06 06:58:43,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-06 06:58:43,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-04-06 06:58:43,212 INFO L138 SettingsManager]: * sizeof long double=12
[2022-04-06 06:58:43,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-04-06 06:58:43,212 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-04-06 06:58:43,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-04-06 06:58:43,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-06 06:58:43,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-04-06 06:58:43,213 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-04-06 06:58:43,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-04-06 06:58:43,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 06:58:43,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-06 06:58:43,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-04-06 06:58:43,213 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-04-06 06:58:43,213 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-04-06 06:58:43,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-06 06:58:43,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-06 06:58:43,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-06 06:58:43,394 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-04-06 06:58:43,394 INFO L275 PluginConnector]: CDTParser initialized
[2022-04-06 06:58:43,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound5.c
[2022-04-06 06:58:43,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff316bee2/ba052a877eaa4ff2be74a704237d266d/FLAG02ef5fa86
[2022-04-06 06:58:43,756 INFO L306 CDTParser]: Found 1 translation units.
[2022-04-06 06:58:43,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound5.c
[2022-04-06 06:58:43,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff316bee2/ba052a877eaa4ff2be74a704237d266d/FLAG02ef5fa86
[2022-04-06 06:58:44,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff316bee2/ba052a877eaa4ff2be74a704237d266d
[2022-04-06 06:58:44,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-06 06:58:44,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-04-06 06:58:44,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-06 06:58:44,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-06 06:58:44,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-06 06:58:44,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f54f8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44, skipping insertion in model container
[2022-04-06 06:58:44,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-04-06 06:58:44,207 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-04-06 06:58:44,351 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/fermat2-ll_unwindbound5.c[524,537]
[2022-04-06 06:58:44,364 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 06:58:44,369 INFO L203 MainTranslator]: Completed pre-run
[2022-04-06 06:58:44,381 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/fermat2-ll_unwindbound5.c[524,537]
[2022-04-06 06:58:44,395 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 06:58:44,403 INFO L208 MainTranslator]: Completed translation
[2022-04-06 06:58:44,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44 WrapperNode
[2022-04-06 06:58:44,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-06 06:58:44,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-06 06:58:44,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-06 06:58:44,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-04-06 06:58:44,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-06 06:58:44,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-06 06:58:44,437 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-04-06 06:58:44,437 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-04-06 06:58:44,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 06:58:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:44,457 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 06:58:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-04-06 06:58:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-06 06:58:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-04-06 06:58:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-04-06 06:58:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-04-06 06:58:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-04-06 06:58:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-04-06 06:58:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-04-06 06:58:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-04-06 06:58:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-06 06:58:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-04-06 06:58:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-04-06 06:58:44,475 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 06:58:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-04-06 06:58:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-04-06 06:58:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-04-06 06:58:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-06 06:58:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-06 06:58:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-04-06 06:58:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-04-06 06:58:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-06 06:58:44,534 INFO L234 CfgBuilder]: Building ICFG
[2022-04-06 06:58:44,535 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-06 06:58:44,689 INFO L275 CfgBuilder]: Performing block encoding
[2022-04-06 06:58:44,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-06 06:58:44,693 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-04-06 06:58:44,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:58:44 BoogieIcfgContainer
[2022-04-06 06:58:44,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-06 06:58:44,695 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-04-06 06:58:44,695 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-04-06 06:58:44,696 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-04-06 06:58:44,711 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:58:44" (1/1) ...
[2022-04-06 06:58:44,713 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN
[2022-04-06 06:58:44,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:58:44 BasicIcfg
[2022-04-06 06:58:44,722 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-04-06 06:58:44,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-06 06:58:44,735 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-04-06 06:58:44,737 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-04-06 06:58:44,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:58:44" (1/4) ...
[2022-04-06 06:58:44,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d6ed2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:58:44, skipping insertion in model container
[2022-04-06 06:58:44,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:58:44" (2/4) ...
[2022-04-06 06:58:44,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d6ed2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:58:44, skipping insertion in model container
[2022-04-06 06:58:44,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:58:44" (3/4) ...
[2022-04-06 06:58:44,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d6ed2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:58:44, skipping insertion in model container
[2022-04-06 06:58:44,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:58:44" (4/4) ...
[2022-04-06 06:58:44,739 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound5.cJordan
[2022-04-06 06:58:44,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2022-04-06 06:58:44,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-04-06 06:58:44,785 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-06 06:58:44,790 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 06:58:44,791 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-04-06 06:58:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-04-06 06:58:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-04-06 06:58:44,813 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 06:58:44,813 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 06:58:44,814 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 06:58:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 06:58:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times
[2022-04-06 06:58:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 06:58:44,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497408156]
[2022-04-06 06:58:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 06:58:44,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 06:58:44,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039162636]
[2022-04-06 06:58:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:44,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:44,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:44,900 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 06:58:44,901 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 06:58:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 06:58:44,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-04-06 06:58:44,963 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 06:58:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-04-06 06:58:45,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 06:58:45,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 06:58:45,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497408156]
[2022-04-06 06:58:45,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 06:58:45,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039162636]
[2022-04-06 06:58:45,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039162636] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 06:58:45,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 06:58:45,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-06 06:58:45,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356712248]
[2022-04-06 06:58:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 06:58:45,033 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-04-06 06:58:45,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 06:58:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-04-06 06:58:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-06 06:58:45,050 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-04-06 06:58:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 06:58:45,060 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions.
[2022-04-06 06:58:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-04-06 06:58:45,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22
[2022-04-06 06:58:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 06:58:45,070 INFO L225 Difference]: With dead ends: 30
[2022-04-06 06:58:45,070 INFO L226 Difference]: Without dead ends: 25
[2022-04-06 06:58:45,071 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 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 06:58:45,073 INFO L913 BasicCegarLoop]: 34 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, 34 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 06:58:45,074 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 06:58:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-04-06 06:58:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-04-06 06:58:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-04-06 06:58:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions.
[2022-04-06 06:58:45,095 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22
[2022-04-06 06:58:45,095 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 06:58:45,095 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions.
[2022-04-06 06:58:45,095 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-04-06 06:58:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions.
[2022-04-06 06:58:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-04-06 06:58:45,096 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 06:58:45,096 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 06:58:45,114 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 06:58:45,312 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 06:58:45,313 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 06:58:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 06:58:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times
[2022-04-06 06:58:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 06:58:45,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857240069]
[2022-04-06 06:58:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 06:58:45,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 06:58:45,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879539914]
[2022-04-06 06:58:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:45,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:45,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:45,341 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 06:58:45,343 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 06:58:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 06:58:45,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-04-06 06:58:45,393 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 06:58:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-04-06 06:58:45,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 06:58:45,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 06:58:45,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857240069]
[2022-04-06 06:58:45,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 06:58:45,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879539914]
[2022-04-06 06:58:45,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879539914] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 06:58:45,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 06:58:45,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 06:58:45,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080258332]
[2022-04-06 06:58:45,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 06:58:45,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-04-06 06:58:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 06:58:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-04-06 06:58:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 06:58:45,477 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2022-04-06 06:58:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 06:58:45,489 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions.
[2022-04-06 06:58:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-04-06 06:58:45,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2022-04-06 06:58:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 06:58:45,490 INFO L225 Difference]: With dead ends: 27
[2022-04-06 06:58:45,491 INFO L226 Difference]: Without dead ends: 27
[2022-04-06 06:58:45,491 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 06:58:45,492 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 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 06:58:45,493 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 06:58:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-04-06 06:58:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-04-06 06:58:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-04-06 06:58:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions.
[2022-04-06 06:58:45,500 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23
[2022-04-06 06:58:45,501 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 06:58:45,501 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions.
[2022-04-06 06:58:45,502 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2022-04-06 06:58:45,502 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions.
[2022-04-06 06:58:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-04-06 06:58:45,503 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 06:58:45,503 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 06:58:45,527 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 06:58:45,707 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 06:58:45,708 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 06:58:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 06:58:45,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times
[2022-04-06 06:58:45,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 06:58:45,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703318708]
[2022-04-06 06:58:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:45,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 06:58:45,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 06:58:45,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568677660]
[2022-04-06 06:58:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:45,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:45,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:45,736 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 06:58:45,770 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 06:58:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 06:58:45,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-04-06 06:58:45,830 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 06:58:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-04-06 06:58:46,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 06:58:46,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 06:58:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703318708]
[2022-04-06 06:58:46,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 06:58:46,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568677660]
[2022-04-06 06:58:46,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568677660] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 06:58:46,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 06:58:46,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-04-06 06:58:46,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223665102]
[2022-04-06 06:58:46,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 06:58:46,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-04-06 06:58:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 06:58:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-04-06 06:58:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-04-06 06:58:46,162 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2022-04-06 06:58:48,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-04-06 06:58:51,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-04-06 06:58:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 06:58:51,068 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions.
[2022-04-06 06:58:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-04-06 06:58:51,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2022-04-06 06:58:51,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 06:58:51,071 INFO L225 Difference]: With dead ends: 35
[2022-04-06 06:58:51,071 INFO L226 Difference]: Without dead ends: 35
[2022-04-06 06:58:51,071 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 06:58:51,072 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-04-06 06:58:51,072 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 82 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time]
[2022-04-06 06:58:51,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2022-04-06 06:58:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2022-04-06 06:58:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2022-04-06 06:58:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions.
[2022-04-06 06:58:51,076 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23
[2022-04-06 06:58:51,076 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 06:58:51,076 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions.
[2022-04-06 06:58:51,076 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2022-04-06 06:58:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions.
[2022-04-06 06:58:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-04-06 06:58:51,077 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 06:58:51,077 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 06:58:51,100 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 06:58:51,277 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 06:58:51,277 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 06:58:51,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 06:58:51,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times
[2022-04-06 06:58:51,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 06:58:51,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672882999]
[2022-04-06 06:58:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 06:58:51,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 06:58:51,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894311775]
[2022-04-06 06:58:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:51,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:51,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:51,298 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 06:58:51,299 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 06:58:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 06:58:51,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-04-06 06:58:51,344 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 06:58:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-04-06 06:58:51,439 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 06:58:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-04-06 06:58:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 06:58:51,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672882999]
[2022-04-06 06:58:51,601 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 06:58:51,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894311775]
[2022-04-06 06:58:51,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894311775] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 06:58:51,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-04-06 06:58:51,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2022-04-06 06:58:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907316506]
[2022-04-06 06:58:51,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-04-06 06:58:51,602 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-04-06 06:58:51,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 06:58:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-04-06 06:58:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2022-04-06 06:58:51,603 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5)
[2022-04-06 06:58:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 06:58:51,812 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions.
[2022-04-06 06:58:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-04-06 06:58:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29
[2022-04-06 06:58:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 06:58:51,814 INFO L225 Difference]: With dead ends: 37
[2022-04-06 06:58:51,815 INFO L226 Difference]: Without dead ends: 34
[2022-04-06 06:58:51,815 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2022-04-06 06:58:51,816 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-06 06:58:51,816 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 98 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-06 06:58:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-04-06 06:58:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29.
[2022-04-06 06:58:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-04-06 06:58:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2022-04-06 06:58:51,820 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29
[2022-04-06 06:58:51,820 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 06:58:51,820 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2022-04-06 06:58:51,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5)
[2022-04-06 06:58:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2022-04-06 06:58:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-04-06 06:58:51,821 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 06:58:51,821 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 06:58:51,860 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 06:58:52,035 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 06:58:52,036 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 06:58:52,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 06:58:52,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times
[2022-04-06 06:58:52,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 06:58:52,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143300678]
[2022-04-06 06:58:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:52,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 06:58:52,045 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 06:58:52,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989848824]
[2022-04-06 06:58:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:52,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:52,050 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 06:58:52,063 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 06:58:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 06:58:52,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-04-06 06:58:52,095 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 06:58:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-04-06 06:58:52,178 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 06:58:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-04-06 06:58:52,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 06:58:52,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143300678]
[2022-04-06 06:58:52,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 06:58:52,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989848824]
[2022-04-06 06:58:52,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989848824] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 06:58:52,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-04-06 06:58:52,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2022-04-06 06:58:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713206710]
[2022-04-06 06:58:52,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-04-06 06:58:52,261 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-04-06 06:58:52,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 06:58:52,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-04-06 06:58:52,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2022-04-06 06:58:52,262 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8)
[2022-04-06 06:58:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 06:58:52,315 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions.
[2022-04-06 06:58:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-04-06 06:58:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 32
[2022-04-06 06:58:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 06:58:52,318 INFO L225 Difference]: With dead ends: 56
[2022-04-06 06:58:52,318 INFO L226 Difference]: Without dead ends: 56
[2022-04-06 06:58:52,318 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 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 06:58:52,322 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 06:58:52,322 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 94 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 06:58:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2022-04-06 06:58:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2022-04-06 06:58:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-04-06 06:58:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions.
[2022-04-06 06:58:52,344 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 32
[2022-04-06 06:58:52,345 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 06:58:52,345 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions.
[2022-04-06 06:58:52,345 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8)
[2022-04-06 06:58:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions.
[2022-04-06 06:58:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2022-04-06 06:58:52,346 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 06:58:52,346 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 06:58:52,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-04-06 06:58:52,546 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 06:58:52,547 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 06:58:52,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 06:58:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 2 times
[2022-04-06 06:58:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 06:58:52,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143419378]
[2022-04-06 06:58:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 06:58:52,557 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 06:58:52,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725392849]
[2022-04-06 06:58:52,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-04-06 06:58:52,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:52,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:52,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 06:58:52,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-04-06 06:58:52,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-04-06 06:58:52,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-04-06 06:58:52,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-04-06 06:58:52,656 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 06:58:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-04-06 06:58:52,788 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 06:58:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-04-06 06:58:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 06:58:52,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143419378]
[2022-04-06 06:58:52,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 06:58:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725392849]
[2022-04-06 06:58:52,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725392849] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 06:58:52,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-04-06 06:58:52,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2022-04-06 06:58:52,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583206506]
[2022-04-06 06:58:52,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-04-06 06:58:52,903 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-04-06 06:58:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 06:58:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-04-06 06:58:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-04-06 06:58:52,904 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13)
[2022-04-06 06:58:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 06:58:52,977 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions.
[2022-04-06 06:58:52,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-04-06 06:58:52,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 59
[2022-04-06 06:58:52,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 06:58:52,979 INFO L225 Difference]: With dead ends: 65
[2022-04-06 06:58:52,979 INFO L226 Difference]: Without dead ends: 65
[2022-04-06 06:58:52,979 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132
[2022-04-06 06:58:52,980 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 06:58:52,980 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 108 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 06:58:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2022-04-06 06:58:52,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2022-04-06 06:58:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-04-06 06:58:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions.
[2022-04-06 06:58:52,986 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 59
[2022-04-06 06:58:52,986 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 06:58:52,986 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions.
[2022-04-06 06:58:52,986 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13)
[2022-04-06 06:58:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions.
[2022-04-06 06:58:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2022-04-06 06:58:52,987 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 06:58:52,988 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 06:58:53,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-04-06 06:58:53,211 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:53,211 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 06:58:53,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 06:58:53,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1572135395, now seen corresponding path program 3 times
[2022-04-06 06:58:53,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 06:58:53,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46848737]
[2022-04-06 06:58:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 06:58:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 06:58:53,223 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 06:58:53,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234709055]
[2022-04-06 06:58:53,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-04-06 06:58:53,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:53,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 06:58:53,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 06:58:53,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-04-06 06:58:54,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2022-04-06 06:58:54,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2022-04-06 06:58:54,432 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-04-06 06:58:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-06 06:58:54,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-04-06 06:58:54,613 INFO L618 BasicCegarLoop]: Counterexample is feasible
[2022-04-06 06:58:54,614 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-04-06 06:58:54,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2022-04-06 06:58:54,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 06:58:54,818 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1]
[2022-04-06 06:58:54,820 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-04-06 06:58:54,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:58:54 BasicIcfg
[2022-04-06 06:58:54,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-04-06 06:58:54,843 INFO L158 Benchmark]: Toolchain (without parser) took 10657.81ms. Allocated memory was 194.0MB in the beginning and 273.7MB in the end (delta: 79.7MB). Free memory was 140.2MB in the beginning and 233.2MB in the end (delta: -93.0MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-04-06 06:58:54,843 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-04-06 06:58:54,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.15ms. Allocated memory is still 194.0MB. Free memory was 140.1MB in the beginning and 169.1MB in the end (delta: -29.0MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB.
[2022-04-06 06:58:54,844 INFO L158 Benchmark]: Boogie Preprocessor took 31.95ms. Allocated memory is still 194.0MB. Free memory was 169.1MB in the beginning and 167.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-04-06 06:58:54,844 INFO L158 Benchmark]: RCFGBuilder took 257.75ms. Allocated memory is still 194.0MB. Free memory was 167.6MB in the beginning and 157.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-04-06 06:58:54,844 INFO L158 Benchmark]: IcfgTransformer took 27.61ms. Allocated memory is still 194.0MB. Free memory was 157.2MB in the beginning and 155.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-04-06 06:58:54,845 INFO L158 Benchmark]: TraceAbstraction took 10108.32ms. Allocated memory was 194.0MB in the beginning and 273.7MB in the end (delta: 79.7MB). Free memory was 155.2MB in the beginning and 233.2MB in the end (delta: -78.0MB). Peak memory consumption was 2.6MB. Max. memory is 8.0GB.
[2022-04-06 06:58:54,845 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 194.0MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 217.15ms. Allocated memory is still 194.0MB. Free memory was 140.1MB in the beginning and 169.1MB in the end (delta: -29.0MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 31.95ms. Allocated memory is still 194.0MB. Free memory was 169.1MB in the beginning and 167.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 257.75ms. Allocated memory is still 194.0MB. Free memory was 167.6MB in the beginning and 157.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 27.61ms. Allocated memory is still 194.0MB. Free memory was 157.2MB in the beginning and 155.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* TraceAbstraction took 10108.32ms. Allocated memory was 194.0MB in the beginning and 273.7MB in the end (delta: 79.7MB). Free memory was 155.2MB in the beginning and 233.2MB in the end (delta: -78.0MB). Peak memory consumption was 2.6MB. 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
- CounterExampleResult [Line: 14]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L19] int counter = 0;
VAL [\old(counter)=8, counter=0]
[L21] int A, R;
[L22] long long u, v, r;
[L23] A = __VERIFIER_nondet_int()
[L24] R = __VERIFIER_nondet_int()
[L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A)
VAL [\old(cond)=1, \old(counter)=0, counter=0]
[L9] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0]
[L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A)
VAL [\old(counter)=0, A=1851, counter=0, R=44]
[L28] CALL assume_abort_if_not(A % 2 == 1)
VAL [\old(cond)=1, \old(counter)=0, counter=0]
[L9] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0]
[L28] RET assume_abort_if_not(A % 2 == 1)
VAL [\old(counter)=0, A=1851, counter=0, R=44]
[L30] u = ((long long) 2 * R) + 1
[L31] v = 1
[L32] r = ((long long) R * R) - A
VAL [\old(counter)=0, A=1851, counter=0, r=85, R=44, u=89, v=1]
[L34] EXPR counter++
VAL [\old(counter)=0, A=1851, counter=1, counter++=0, r=85, R=44, u=89, v=1]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, \old(counter)=0, counter=1]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(counter)=0, A=1851, counter=1, R=44, r=85, u=89, v=1]
[L36] COND FALSE !(!(r != 0))
VAL [\old(counter)=0, A=1851, counter=1, r=85, R=44, u=89, v=1]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [\old(counter)=0, A=1851, counter=1, r=84, R=44, u=89, v=3]
[L34] EXPR counter++
VAL [\old(counter)=0, A=1851, counter=2, counter++=1, r=84, R=44, u=89, v=3]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, \old(counter)=0, counter=2]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(counter)=0, A=1851, counter=2, r=84, R=44, u=89, v=3]
[L36] COND FALSE !(!(r != 0))
VAL [\old(counter)=0, A=1851, counter=2, R=44, r=84, u=89, v=3]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [\old(counter)=0, A=1851, counter=2, R=44, r=81, u=89, v=5]
[L34] EXPR counter++
VAL [\old(counter)=0, A=1851, counter=3, counter++=2, r=81, R=44, u=89, v=5]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, \old(counter)=0, counter=3]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(counter)=0, A=1851, counter=3, R=44, r=81, u=89, v=5]
[L36] COND FALSE !(!(r != 0))
VAL [\old(counter)=0, A=1851, counter=3, R=44, r=81, u=89, v=5]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [\old(counter)=0, A=1851, counter=3, r=76, R=44, u=89, v=7]
[L34] EXPR counter++
VAL [\old(counter)=0, A=1851, counter=4, counter++=3, R=44, r=76, u=89, v=7]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, \old(counter)=0, counter=4]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(counter)=0, A=1851, counter=4, R=44, r=76, u=89, v=7]
[L36] COND FALSE !(!(r != 0))
VAL [\old(counter)=0, A=1851, counter=4, R=44, r=76, u=89, v=7]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [\old(counter)=0, A=1851, counter=4, R=44, r=69, u=89, v=9]
[L34] EXPR counter++
VAL [\old(counter)=0, A=1851, counter=5, counter++=4, r=69, R=44, u=89, v=9]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, \old(counter)=0, counter=5]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(counter)=0, A=1851, counter=5, r=69, R=44, u=89, v=9]
[L36] COND FALSE !(!(r != 0))
VAL [\old(counter)=0, A=1851, counter=5, r=69, R=44, u=89, v=9]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [\old(counter)=0, A=1851, counter=5, r=60, R=44, u=89, v=11]
[L34] EXPR counter++
VAL [\old(counter)=0, A=1851, counter=6, counter++=5, r=60, R=44, u=89, v=11]
[L34] COND FALSE !(counter++<5)
[L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=0, \old(counter)=0, counter=6]
[L12] COND TRUE !(cond)
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6]
[L14] reach_error()
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 483 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 164 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 275 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=6, InterpolantAutomatonStates: 41, 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 779 SizeOfPredicates, 17 NumberOfNonLiveVariables, 665 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 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
RESULT: Ultimate proved your program to be incorrect!
[2022-04-06 06:58:54,866 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...