/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound20.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-7968f31
[2022-03-17 21:29:59,024 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-03-17 21:29:59,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-03-17 21:29:59,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-03-17 21:29:59,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-03-17 21:29:59,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-03-17 21:29:59,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-03-17 21:29:59,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-03-17 21:29:59,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-03-17 21:29:59,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-03-17 21:29:59,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-03-17 21:29:59,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-03-17 21:29:59,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-03-17 21:29:59,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-03-17 21:29:59,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-03-17 21:29:59,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-03-17 21:29:59,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-03-17 21:29:59,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-03-17 21:29:59,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-03-17 21:29:59,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-03-17 21:29:59,089 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values
[2022-03-17 21:29:59,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-03-17 21:29:59,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-03-17 21:29:59,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-03-17 21:29:59,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-03-17 21:29:59,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-03-17 21:29:59,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-03-17 21:29:59,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-03-17 21:29:59,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-03-17 21:29:59,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-03-17 21:29:59,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-03-17 21:29:59,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-03-17 21:29:59,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-03-17 21:29:59,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-03-17 21:29:59,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-03-17 21:29:59,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-03-17 21:29:59,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-03-17 21:29:59,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-03-17 21:29:59,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-03-17 21:29:59,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-03-17 21:29:59,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-03-17 21:29:59,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-03-17 21:29:59,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf
[2022-03-17 21:29:59,123 INFO L113 SettingsManager]: Loading preferences was successful
[2022-03-17 21:29:59,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-03-17 21:29:59,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-03-17 21:29:59,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-03-17 21:29:59,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-03-17 21:29:59,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-03-17 21:29:59,126 INFO L138 SettingsManager]: * Use SBE=true
[2022-03-17 21:29:59,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-03-17 21:29:59,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-03-17 21:29:59,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-03-17 21:29:59,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-03-17 21:29:59,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-03-17 21:29:59,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-03-17 21:29:59,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-03-17 21:29:59,127 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-03-17 21:29:59,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-03-17 21:29:59,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-03-17 21:29:59,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-03-17 21:29:59,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-03-17 21:29:59,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-17 21:29:59,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-03-17 21:29:59,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-03-17 21:29:59,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-03-17 21:29:59,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-03-17 21:29:59,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-03-17 21:29:59,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-03-17 21:29:59,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2022-03-17 21:29:59,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-03-17 21:29:59,130 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-03-17 21:29:59,130 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-03-17 21:29:59,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-03-17 21:29:59,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-03-17 21:29:59,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-03-17 21:29:59,339 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-03-17 21:29:59,340 INFO L275 PluginConnector]: CDTParser initialized
[2022-03-17 21:29:59,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound20.c
[2022-03-17 21:29:59,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b6ea7ac/9baee15b332243f6afde1505cf201d48/FLAG81aa46b9f
[2022-03-17 21:29:59,692 INFO L306 CDTParser]: Found 1 translation units.
[2022-03-17 21:29:59,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound20.c
[2022-03-17 21:29:59,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b6ea7ac/9baee15b332243f6afde1505cf201d48/FLAG81aa46b9f
[2022-03-17 21:30:00,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b6ea7ac/9baee15b332243f6afde1505cf201d48
[2022-03-17 21:30:00,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-03-17 21:30:00,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-03-17 21:30:00,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-03-17 21:30:00,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-03-17 21:30:00,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-03-17 21:30:00,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e164843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00, skipping insertion in model container
[2022-03-17 21:30:00,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-03-17 21:30:00,146 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-03-17 21:30:00,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound20.c[490,503]
[2022-03-17 21:30:00,273 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-03-17 21:30:00,278 INFO L203 MainTranslator]: Completed pre-run
[2022-03-17 21:30:00,284 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/egcd3-ll_unwindbound20.c[490,503]
[2022-03-17 21:30:00,290 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-03-17 21:30:00,298 INFO L208 MainTranslator]: Completed translation
[2022-03-17 21:30:00,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00 WrapperNode
[2022-03-17 21:30:00,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-03-17 21:30:00,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-03-17 21:30:00,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-03-17 21:30:00,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-03-17 21:30:00,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-03-17 21:30:00,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-03-17 21:30:00,336 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-03-17 21:30:00,336 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-03-17 21:30:00,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-17 21:30:00,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:00,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-03-17 21:30:00,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-03-17 21:30:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-03-17 21:30:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-03-17 21:30:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-03-17 21:30:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-03-17 21:30:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-03-17 21:30:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-03-17 21:30:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-03-17 21:30:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-03-17 21:30:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-03-17 21:30:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-03-17 21:30:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-03-17 21:30:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-03-17 21:30:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-03-17 21:30:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-03-17 21:30:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-03-17 21:30:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-03-17 21:30:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-03-17 21:30:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-03-17 21:30:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-03-17 21:30:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-03-17 21:30:00,462 INFO L234 CfgBuilder]: Building ICFG
[2022-03-17 21:30:00,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-03-17 21:30:00,585 INFO L275 CfgBuilder]: Performing block encoding
[2022-03-17 21:30:00,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-03-17 21:30:00,593 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2022-03-17 21:30:00,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 09:30:00 BoogieIcfgContainer
[2022-03-17 21:30:00,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-03-17 21:30:00,594 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-03-17 21:30:00,594 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-03-17 21:30:00,595 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-03-17 21:30:00,597 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 09:30:00" (1/1) ...
[2022-03-17 21:30:00,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 09:30:00 BasicIcfg
[2022-03-17 21:30:00,616 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-03-17 21:30:00,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-03-17 21:30:00,617 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-03-17 21:30:00,619 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-03-17 21:30:00,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 09:30:00" (1/4) ...
[2022-03-17 21:30:00,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef23df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 09:30:00, skipping insertion in model container
[2022-03-17 21:30:00,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 09:30:00" (2/4) ...
[2022-03-17 21:30:00,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef23df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 09:30:00, skipping insertion in model container
[2022-03-17 21:30:00,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 09:30:00" (3/4) ...
[2022-03-17 21:30:00,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef23df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 09:30:00, skipping insertion in model container
[2022-03-17 21:30:00,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 09:30:00" (4/4) ...
[2022-03-17 21:30:00,621 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound20.cqvasr
[2022-03-17 21:30:00,627 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-03-17 21:30:00,627 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-03-17 21:30:00,659 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-03-17 21:30:00,664 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-03-17 21:30:00,664 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-03-17 21:30:00,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-03-17 21:30:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-03-17 21:30:00,681 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:00,682 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:00,683 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 6304412, now seen corresponding path program 1 times
[2022-03-17 21:30:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:00,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578258765]
[2022-03-17 21:30:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-03-17 21:30:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-03-17 21:30:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-03-17 21:30:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:00,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:00,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578258765]
[2022-03-17 21:30:00,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578258765] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:00,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:00,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-03-17 21:30:00,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325443546]
[2022-03-17 21:30:00,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:00,866 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-03-17 21:30:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:00,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-03-17 21:30:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-17 21:30:00,884 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-03-17 21:30:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:00,954 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions.
[2022-03-17 21:30:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-03-17 21:30:00,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 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
[2022-03-17 21:30:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:00,963 INFO L225 Difference]: With dead ends: 74
[2022-03-17 21:30:00,963 INFO L226 Difference]: Without dead ends: 36
[2022-03-17 21:30:00,965 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-17 21:30:00,968 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:00,969 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 51 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-03-17 21:30:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35.
[2022-03-17 21:30:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-03-17 21:30:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions.
[2022-03-17 21:30:00,997 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 22
[2022-03-17 21:30:00,998 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:00,998 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions.
[2022-03-17 21:30:00,998 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-03-17 21:30:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions.
[2022-03-17 21:30:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-03-17 21:30:01,000 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:01,000 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:01,000 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-03-17 21:30:01,000 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:01,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1535904754, now seen corresponding path program 1 times
[2022-03-17 21:30:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:01,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136714528]
[2022-03-17 21:30:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:01,015 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:01,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095603860]
[2022-03-17 21:30:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:01,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:01,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:01,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:01,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-03-17 21:30:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:01,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-03-17 21:30:01,072 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:01,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136714528]
[2022-03-17 21:30:01,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095603860]
[2022-03-17 21:30:01,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095603860] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:01,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:01,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-03-17 21:30:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722969422]
[2022-03-17 21:30:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:01,189 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-03-17 21:30:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-03-17 21:30:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-03-17 21:30:01,190 INFO L87 Difference]: Start difference. First operand 35 states and 45 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)
[2022-03-17 21:30:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:01,235 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions.
[2022-03-17 21:30:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-03-17 21:30:01,235 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
[2022-03-17 21:30:01,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:01,236 INFO L225 Difference]: With dead ends: 44
[2022-03-17 21:30:01,236 INFO L226 Difference]: Without dead ends: 37
[2022-03-17 21:30:01,236 INFO L911 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
[2022-03-17 21:30:01,237 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:01,238 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2022-03-17 21:30:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2022-03-17 21:30:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-03-17 21:30:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions.
[2022-03-17 21:30:01,244 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 23
[2022-03-17 21:30:01,244 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:01,245 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions.
[2022-03-17 21:30:01,245 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)
[2022-03-17 21:30:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions.
[2022-03-17 21:30:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-03-17 21:30:01,245 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:01,245 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:01,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:01,446 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:01,447 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash 401530880, now seen corresponding path program 1 times
[2022-03-17 21:30:01,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:01,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779029338]
[2022-03-17 21:30:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:01,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:01,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:01,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73101119]
[2022-03-17 21:30:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:01,467 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)
[2022-03-17 21:30:01,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-03-17 21:30:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:01,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-03-17 21:30:01,521 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-03-17 21:30:01,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:01,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:01,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779029338]
[2022-03-17 21:30:01,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:01,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73101119]
[2022-03-17 21:30:01,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73101119] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:01,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:01,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-17 21:30:01,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671361208]
[2022-03-17 21:30:01,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:01,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-03-17 21:30:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:01,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-03-17 21:30:01,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-03-17 21:30:01,613 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2022-03-17 21:30:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:01,698 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions.
[2022-03-17 21:30:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-03-17 21:30:01,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24
[2022-03-17 21:30:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:01,708 INFO L225 Difference]: With dead ends: 57
[2022-03-17 21:30:01,708 INFO L226 Difference]: Without dead ends: 50
[2022-03-17 21:30:01,708 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-03-17 21:30:01,709 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:01,709 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 169 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:30:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-03-17 21:30:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38.
[2022-03-17 21:30:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-03-17 21:30:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions.
[2022-03-17 21:30:01,716 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 24
[2022-03-17 21:30:01,716 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:01,716 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions.
[2022-03-17 21:30:01,716 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2022-03-17 21:30:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions.
[2022-03-17 21:30:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-03-17 21:30:01,717 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:01,717 INFO L500 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]
[2022-03-17 21:30:01,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:01,931 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,SelfDestructingSolverStorable2
[2022-03-17 21:30:01,932 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2110136122, now seen corresponding path program 1 times
[2022-03-17 21:30:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931691534]
[2022-03-17 21:30:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:01,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:01,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:01,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379047015]
[2022-03-17 21:30:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:01,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:01,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:01,949 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)
[2022-03-17 21:30:01,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-03-17 21:30:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:02,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-03-17 21:30:02,013 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:02,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:02,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:02,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931691534]
[2022-03-17 21:30:02,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:02,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379047015]
[2022-03-17 21:30:02,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379047015] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:02,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:02,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-03-17 21:30:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113316439]
[2022-03-17 21:30:02,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:02,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-03-17 21:30:02,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-03-17 21:30:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-03-17 21:30:02,086 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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)
[2022-03-17 21:30:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:02,112 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions.
[2022-03-17 21:30:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-03-17 21:30:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 29
[2022-03-17 21:30:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:02,115 INFO L225 Difference]: With dead ends: 62
[2022-03-17 21:30:02,115 INFO L226 Difference]: Without dead ends: 40
[2022-03-17 21:30:02,116 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-03-17 21:30:02,117 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:02,118 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-03-17 21:30:02,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2022-03-17 21:30:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-03-17 21:30:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions.
[2022-03-17 21:30:02,123 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 29
[2022-03-17 21:30:02,123 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:02,123 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions.
[2022-03-17 21:30:02,123 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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)
[2022-03-17 21:30:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions.
[2022-03-17 21:30:02,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-03-17 21:30:02,124 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:02,124 INFO L500 BasicCegarLoop]: trace histogram [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, 1]
[2022-03-17 21:30:02,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:02,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:02,328 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash -358604865, now seen corresponding path program 1 times
[2022-03-17 21:30:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:02,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280468505]
[2022-03-17 21:30:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:02,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:02,346 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:02,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682442424]
[2022-03-17 21:30:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:02,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:02,352 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)
[2022-03-17 21:30:02,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-03-17 21:30:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:02,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-03-17 21:30:02,460 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-03-17 21:30:02,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280468505]
[2022-03-17 21:30:02,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682442424]
[2022-03-17 21:30:02,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682442424] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:02,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:02,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-03-17 21:30:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294625173]
[2022-03-17 21:30:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:02,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-03-17 21:30:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-03-17 21:30:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2022-03-17 21:30:02,717 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2022-03-17 21:30:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:02,892 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions.
[2022-03-17 21:30:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-03-17 21:30:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29
[2022-03-17 21:30:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:02,893 INFO L225 Difference]: With dead ends: 68
[2022-03-17 21:30:02,893 INFO L226 Difference]: Without dead ends: 66
[2022-03-17 21:30:02,894 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182
[2022-03-17 21:30:02,894 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 79 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:02,894 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 239 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:30:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2022-03-17 21:30:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55.
[2022-03-17 21:30:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 38 states have internal predecessors, (48), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-03-17 21:30:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions.
[2022-03-17 21:30:02,902 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 29
[2022-03-17 21:30:02,902 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:02,902 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions.
[2022-03-17 21:30:02,902 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2022-03-17 21:30:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions.
[2022-03-17 21:30:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-03-17 21:30:02,903 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:02,903 INFO L500 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, 1]
[2022-03-17 21:30:02,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:03,119 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:03,119 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:03,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2061673945, now seen corresponding path program 1 times
[2022-03-17 21:30:03,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:03,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147319817]
[2022-03-17 21:30:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:03,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:03,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:03,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989261329]
[2022-03-17 21:30:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:03,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:03,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:03,131 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)
[2022-03-17 21:30:03,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-03-17 21:30:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:03,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-03-17 21:30:03,166 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:03,220 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:03,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147319817]
[2022-03-17 21:30:03,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989261329]
[2022-03-17 21:30:03,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989261329] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:03,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:03,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2022-03-17 21:30:03,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889883330]
[2022-03-17 21:30:03,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:03,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-03-17 21:30:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-03-17 21:30:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2022-03-17 21:30:03,290 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2022-03-17 21:30:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:03,389 INFO L93 Difference]: Finished difference Result 151 states and 197 transitions.
[2022-03-17 21:30:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-03-17 21:30:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30
[2022-03-17 21:30:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:03,391 INFO L225 Difference]: With dead ends: 151
[2022-03-17 21:30:03,391 INFO L226 Difference]: Without dead ends: 144
[2022-03-17 21:30:03,392 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156
[2022-03-17 21:30:03,392 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 82 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:03,392 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 272 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:30:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2022-03-17 21:30:03,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101.
[2022-03-17 21:30:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 72 states have internal predecessors, (93), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-03-17 21:30:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 134 transitions.
[2022-03-17 21:30:03,405 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 134 transitions. Word has length 30
[2022-03-17 21:30:03,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:03,405 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 134 transitions.
[2022-03-17 21:30:03,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2022-03-17 21:30:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 134 transitions.
[2022-03-17 21:30:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-03-17 21:30:03,406 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:03,406 INFO L500 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]
[2022-03-17 21:30:03,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:03,625 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:03,626 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash 545740907, now seen corresponding path program 1 times
[2022-03-17 21:30:03,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:03,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296618149]
[2022-03-17 21:30:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:03,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:03,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:03,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661845184]
[2022-03-17 21:30:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:03,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:03,640 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)
[2022-03-17 21:30:03,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-03-17 21:30:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:03,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-03-17 21:30:03,676 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-03-17 21:30:03,744 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-03-17 21:30:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:03,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296618149]
[2022-03-17 21:30:03,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:03,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661845184]
[2022-03-17 21:30:03,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661845184] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:03,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:03,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2022-03-17 21:30:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985758281]
[2022-03-17 21:30:03,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:03,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-03-17 21:30:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-03-17 21:30:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2022-03-17 21:30:03,851 INFO L87 Difference]: Start difference. First operand 101 states and 134 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 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)
[2022-03-17 21:30:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:03,969 INFO L93 Difference]: Finished difference Result 187 states and 265 transitions.
[2022-03-17 21:30:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-03-17 21:30:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 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 31
[2022-03-17 21:30:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:03,973 INFO L225 Difference]: With dead ends: 187
[2022-03-17 21:30:03,973 INFO L226 Difference]: Without dead ends: 175
[2022-03-17 21:30:03,973 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240
[2022-03-17 21:30:03,974 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 113 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:03,975 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 362 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:30:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2022-03-17 21:30:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 132.
[2022-03-17 21:30:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 25 states have call successors, (25), 9 states have call predecessors, (25), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-03-17 21:30:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions.
[2022-03-17 21:30:04,007 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31
[2022-03-17 21:30:04,007 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:04,007 INFO L478 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions.
[2022-03-17 21:30:04,007 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 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)
[2022-03-17 21:30:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions.
[2022-03-17 21:30:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-03-17 21:30:04,009 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:04,009 INFO L500 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, 1, 1, 1, 1, 1]
[2022-03-17 21:30:04,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:04,226 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:04,226 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:04,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash 653912885, now seen corresponding path program 1 times
[2022-03-17 21:30:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:04,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849433243]
[2022-03-17 21:30:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:04,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:04,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615357434]
[2022-03-17 21:30:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:04,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:04,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:04,272 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)
[2022-03-17 21:30:04,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-03-17 21:30:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:04,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-03-17 21:30:04,320 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-03-17 21:30:04,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:04,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849433243]
[2022-03-17 21:30:04,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:04,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615357434]
[2022-03-17 21:30:04,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615357434] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:04,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:04,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-03-17 21:30:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257110967]
[2022-03-17 21:30:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:04,507 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-03-17 21:30:04,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-03-17 21:30:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2022-03-17 21:30:04,507 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2022-03-17 21:30:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:04,664 INFO L93 Difference]: Finished difference Result 157 states and 210 transitions.
[2022-03-17 21:30:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-03-17 21:30:04,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34
[2022-03-17 21:30:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:04,666 INFO L225 Difference]: With dead ends: 157
[2022-03-17 21:30:04,666 INFO L226 Difference]: Without dead ends: 155
[2022-03-17 21:30:04,667 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210
[2022-03-17 21:30:04,667 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 80 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:04,667 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 269 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:30:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2022-03-17 21:30:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 144.
[2022-03-17 21:30:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 107 states have (on average 1.3177570093457944) internal successors, (141), 108 states have internal predecessors, (141), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-03-17 21:30:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 189 transitions.
[2022-03-17 21:30:04,682 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 189 transitions. Word has length 34
[2022-03-17 21:30:04,683 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:04,683 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 189 transitions.
[2022-03-17 21:30:04,683 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2022-03-17 21:30:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 189 transitions.
[2022-03-17 21:30:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-03-17 21:30:04,688 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:04,688 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 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]
[2022-03-17 21:30:04,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2022-03-17 21:30:04,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:04,903 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash -47631820, now seen corresponding path program 1 times
[2022-03-17 21:30:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:04,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425509458]
[2022-03-17 21:30:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:04,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:04,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:04,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096110445]
[2022-03-17 21:30:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:04,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:04,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:04,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:04,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-03-17 21:30:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:04,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-03-17 21:30:04,968 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-03-17 21:30:05,133 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:05,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:05,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425509458]
[2022-03-17 21:30:05,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:05,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096110445]
[2022-03-17 21:30:05,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096110445] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:05,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:05,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11
[2022-03-17 21:30:05,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819379409]
[2022-03-17 21:30:05,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:05,223 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-03-17 21:30:05,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:05,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-03-17 21:30:05,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2022-03-17 21:30:05,223 INFO L87 Difference]: Start difference. First operand 144 states and 189 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-03-17 21:30:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:05,355 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions.
[2022-03-17 21:30:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-03-17 21:30:05,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36
[2022-03-17 21:30:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:05,356 INFO L225 Difference]: With dead ends: 179
[2022-03-17 21:30:05,357 INFO L226 Difference]: Without dead ends: 177
[2022-03-17 21:30:05,357 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2022-03-17 21:30:05,357 INFO L912 BasicCegarLoop]: 58 mSDtfsCounter, 76 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:05,358 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 409 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:30:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2022-03-17 21:30:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174.
[2022-03-17 21:30:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 128 states have (on average 1.34375) internal successors, (172), 129 states have internal predecessors, (172), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31)
[2022-03-17 21:30:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 236 transitions.
[2022-03-17 21:30:05,374 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 236 transitions. Word has length 36
[2022-03-17 21:30:05,374 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:05,374 INFO L478 AbstractCegarLoop]: Abstraction has 174 states and 236 transitions.
[2022-03-17 21:30:05,374 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-03-17 21:30:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 236 transitions.
[2022-03-17 21:30:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-03-17 21:30:05,375 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:05,375 INFO L500 BasicCegarLoop]: trace histogram [2, 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, 1, 1]
[2022-03-17 21:30:05,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:05,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2022-03-17 21:30:05,589 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:05,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash -375710268, now seen corresponding path program 1 times
[2022-03-17 21:30:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:05,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746921401]
[2022-03-17 21:30:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:05,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:05,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067515720]
[2022-03-17 21:30:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:05,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:05,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:05,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:05,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2022-03-17 21:30:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:05,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-03-17 21:30:05,647 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:05,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746921401]
[2022-03-17 21:30:05,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067515720]
[2022-03-17 21:30:05,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067515720] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:05,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:05,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-17 21:30:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086502180]
[2022-03-17 21:30:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:05,715 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-03-17 21:30:05,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-03-17 21:30:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-03-17 21:30:05,715 INFO L87 Difference]: Start difference. First operand 174 states and 236 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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)
[2022-03-17 21:30:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:05,741 INFO L93 Difference]: Finished difference Result 241 states and 329 transitions.
[2022-03-17 21:30:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-03-17 21:30:05,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 36
[2022-03-17 21:30:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:05,742 INFO L225 Difference]: With dead ends: 241
[2022-03-17 21:30:05,742 INFO L226 Difference]: Without dead ends: 174
[2022-03-17 21:30:05,743 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-03-17 21:30:05,743 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:05,744 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 119 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states.
[2022-03-17 21:30:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174.
[2022-03-17 21:30:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 128 states have (on average 1.3359375) internal successors, (171), 129 states have internal predecessors, (171), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31)
[2022-03-17 21:30:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 235 transitions.
[2022-03-17 21:30:05,754 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 235 transitions. Word has length 36
[2022-03-17 21:30:05,754 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:05,754 INFO L478 AbstractCegarLoop]: Abstraction has 174 states and 235 transitions.
[2022-03-17 21:30:05,754 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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)
[2022-03-17 21:30:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 235 transitions.
[2022-03-17 21:30:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-03-17 21:30:05,754 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:05,755 INFO L500 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1]
[2022-03-17 21:30:05,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:05,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2022-03-17 21:30:05,971 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash -344890017, now seen corresponding path program 1 times
[2022-03-17 21:30:05,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:05,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195855311]
[2022-03-17 21:30:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:05,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:05,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:05,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059205822]
[2022-03-17 21:30:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:05,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:05,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2022-03-17 21:30:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:06,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-03-17 21:30:06,029 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2022-03-17 21:30:06,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:06,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195855311]
[2022-03-17 21:30:06,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059205822]
[2022-03-17 21:30:06,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059205822] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:06,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:06,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-03-17 21:30:06,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841094175]
[2022-03-17 21:30:06,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:06,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-03-17 21:30:06,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:06,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-03-17 21:30:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-03-17 21:30:06,092 INFO L87 Difference]: Start difference. First operand 174 states and 235 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-03-17 21:30:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:06,131 INFO L93 Difference]: Finished difference Result 239 states and 335 transitions.
[2022-03-17 21:30:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-03-17 21:30:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39
[2022-03-17 21:30:06,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:06,136 INFO L225 Difference]: With dead ends: 239
[2022-03-17 21:30:06,136 INFO L226 Difference]: Without dead ends: 237
[2022-03-17 21:30:06,136 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-03-17 21:30:06,136 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 10 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:06,137 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 155 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2022-03-17 21:30:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230.
[2022-03-17 21:30:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 162 states have internal predecessors, (220), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51)
[2022-03-17 21:30:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 324 transitions.
[2022-03-17 21:30:06,152 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 324 transitions. Word has length 39
[2022-03-17 21:30:06,152 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:06,152 INFO L478 AbstractCegarLoop]: Abstraction has 230 states and 324 transitions.
[2022-03-17 21:30:06,152 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-03-17 21:30:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 324 transitions.
[2022-03-17 21:30:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2022-03-17 21:30:06,153 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:06,153 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1]
[2022-03-17 21:30:06,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:06,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2022-03-17 21:30:06,367 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1057809952, now seen corresponding path program 1 times
[2022-03-17 21:30:06,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:06,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377424069]
[2022-03-17 21:30:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:06,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:06,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:06,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593927285]
[2022-03-17 21:30:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:06,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:06,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:06,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:06,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2022-03-17 21:30:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:06,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core
[2022-03-17 21:30:06,426 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:06,598 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:06,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:06,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377424069]
[2022-03-17 21:30:06,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:06,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593927285]
[2022-03-17 21:30:06,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593927285] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:06,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:06,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2022-03-17 21:30:06,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568795521]
[2022-03-17 21:30:06,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:06,695 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-03-17 21:30:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-03-17 21:30:06,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2022-03-17 21:30:06,696 INFO L87 Difference]: Start difference. First operand 230 states and 324 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2022-03-17 21:30:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:07,410 INFO L93 Difference]: Finished difference Result 392 states and 578 transitions.
[2022-03-17 21:30:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-03-17 21:30:07,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41
[2022-03-17 21:30:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:07,412 INFO L225 Difference]: With dead ends: 392
[2022-03-17 21:30:07,412 INFO L226 Difference]: Without dead ends: 390
[2022-03-17 21:30:07,412 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2022-03-17 21:30:07,413 INFO L912 BasicCegarLoop]: 66 mSDtfsCounter, 170 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:07,413 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 370 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-03-17 21:30:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states.
[2022-03-17 21:30:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 377.
[2022-03-17 21:30:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 266 states have (on average 1.4248120300751879) internal successors, (379), 267 states have internal predecessors, (379), 93 states have call successors, (93), 18 states have call predecessors, (93), 17 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91)
[2022-03-17 21:30:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 563 transitions.
[2022-03-17 21:30:07,441 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 563 transitions. Word has length 41
[2022-03-17 21:30:07,441 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:07,441 INFO L478 AbstractCegarLoop]: Abstraction has 377 states and 563 transitions.
[2022-03-17 21:30:07,442 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2022-03-17 21:30:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 563 transitions.
[2022-03-17 21:30:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2022-03-17 21:30:07,442 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:07,442 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:07,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:07,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2022-03-17 21:30:07,659 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash -800046763, now seen corresponding path program 1 times
[2022-03-17 21:30:07,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:07,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171435523]
[2022-03-17 21:30:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:07,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:07,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283957187]
[2022-03-17 21:30:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:07,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:07,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:07,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:07,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2022-03-17 21:30:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:07,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-03-17 21:30:07,709 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-03-17 21:30:07,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:07,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171435523]
[2022-03-17 21:30:07,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283957187]
[2022-03-17 21:30:07,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283957187] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:07,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:07,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-03-17 21:30:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648907116]
[2022-03-17 21:30:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:07,774 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-03-17 21:30:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:07,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-03-17 21:30:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-03-17 21:30:07,775 INFO L87 Difference]: Start difference. First operand 377 states and 563 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2022-03-17 21:30:07,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:07,835 INFO L93 Difference]: Finished difference Result 566 states and 887 transitions.
[2022-03-17 21:30:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-03-17 21:30:07,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44
[2022-03-17 21:30:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:07,838 INFO L225 Difference]: With dead ends: 566
[2022-03-17 21:30:07,838 INFO L226 Difference]: Without dead ends: 564
[2022-03-17 21:30:07,838 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-03-17 21:30:07,839 INFO L912 BasicCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:07,839 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 172 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states.
[2022-03-17 21:30:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 495.
[2022-03-17 21:30:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 307 states have (on average 1.4267100977198697) internal successors, (438), 327 states have internal predecessors, (438), 169 states have call successors, (169), 19 states have call predecessors, (169), 18 states have return successors, (167), 148 states have call predecessors, (167), 167 states have call successors, (167)
[2022-03-17 21:30:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 774 transitions.
[2022-03-17 21:30:07,892 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 774 transitions. Word has length 44
[2022-03-17 21:30:07,892 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:07,892 INFO L478 AbstractCegarLoop]: Abstraction has 495 states and 774 transitions.
[2022-03-17 21:30:07,893 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2022-03-17 21:30:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 774 transitions.
[2022-03-17 21:30:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-03-17 21:30:07,893 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:07,893 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:07,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:08,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2022-03-17 21:30:08,112 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 684933943, now seen corresponding path program 1 times
[2022-03-17 21:30:08,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:08,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569527609]
[2022-03-17 21:30:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:08,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:08,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717876391]
[2022-03-17 21:30:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:08,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:08,122 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:08,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2022-03-17 21:30:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:08,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-03-17 21:30:08,163 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-03-17 21:30:08,242 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-03-17 21:30:08,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:08,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569527609]
[2022-03-17 21:30:08,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:08,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717876391]
[2022-03-17 21:30:08,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717876391] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:08,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:08,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2022-03-17 21:30:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559546201]
[2022-03-17 21:30:08,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:08,339 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-03-17 21:30:08,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:08,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-03-17 21:30:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132
[2022-03-17 21:30:08,339 INFO L87 Difference]: Start difference. First operand 495 states and 774 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2022-03-17 21:30:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:08,524 INFO L93 Difference]: Finished difference Result 1127 states and 1721 transitions.
[2022-03-17 21:30:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-03-17 21:30:08,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42
[2022-03-17 21:30:08,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:08,537 INFO L225 Difference]: With dead ends: 1127
[2022-03-17 21:30:08,538 INFO L226 Difference]: Without dead ends: 770
[2022-03-17 21:30:08,539 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2022-03-17 21:30:08,539 INFO L912 BasicCegarLoop]: 69 mSDtfsCounter, 169 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:08,540 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 342 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:30:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states.
[2022-03-17 21:30:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 736.
[2022-03-17 21:30:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 471 states have (on average 1.3630573248407643) internal successors, (642), 495 states have internal predecessors, (642), 224 states have call successors, (224), 41 states have call predecessors, (224), 40 states have return successors, (219), 199 states have call predecessors, (219), 219 states have call successors, (219)
[2022-03-17 21:30:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1085 transitions.
[2022-03-17 21:30:08,604 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1085 transitions. Word has length 42
[2022-03-17 21:30:08,605 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:08,605 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1085 transitions.
[2022-03-17 21:30:08,605 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2022-03-17 21:30:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1085 transitions.
[2022-03-17 21:30:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2022-03-17 21:30:08,605 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:08,605 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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]
[2022-03-17 21:30:08,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:08,824 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2022-03-17 21:30:08,824 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:08,825 INFO L85 PathProgramCache]: Analyzing trace with hash 841576990, now seen corresponding path program 1 times
[2022-03-17 21:30:08,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:08,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884008972]
[2022-03-17 21:30:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:08,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:08,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:08,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727235484]
[2022-03-17 21:30:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:08,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:08,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:08,838 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:08,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2022-03-17 21:30:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:08,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-03-17 21:30:08,884 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:08,954 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-03-17 21:30:09,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:09,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884008972]
[2022-03-17 21:30:09,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:09,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727235484]
[2022-03-17 21:30:09,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727235484] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:09,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:09,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-03-17 21:30:09,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358982438]
[2022-03-17 21:30:09,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:09,046 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-03-17 21:30:09,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:09,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-03-17 21:30:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2022-03-17 21:30:09,047 INFO L87 Difference]: Start difference. First operand 736 states and 1085 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2022-03-17 21:30:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:09,346 INFO L93 Difference]: Finished difference Result 1597 states and 2379 transitions.
[2022-03-17 21:30:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-03-17 21:30:09,346 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43
[2022-03-17 21:30:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:09,350 INFO L225 Difference]: With dead ends: 1597
[2022-03-17 21:30:09,350 INFO L226 Difference]: Without dead ends: 1119
[2022-03-17 21:30:09,352 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420
[2022-03-17 21:30:09,352 INFO L912 BasicCegarLoop]: 75 mSDtfsCounter, 255 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:09,352 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 319 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-03-17 21:30:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states.
[2022-03-17 21:30:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1072.
[2022-03-17 21:30:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 697 states have (on average 1.3113342898134863) internal successors, (914), 730 states have internal predecessors, (914), 318 states have call successors, (318), 57 states have call predecessors, (318), 56 states have return successors, (311), 284 states have call predecessors, (311), 311 states have call successors, (311)
[2022-03-17 21:30:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1543 transitions.
[2022-03-17 21:30:09,450 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1543 transitions. Word has length 43
[2022-03-17 21:30:09,450 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:09,450 INFO L478 AbstractCegarLoop]: Abstraction has 1072 states and 1543 transitions.
[2022-03-17 21:30:09,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2022-03-17 21:30:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1543 transitions.
[2022-03-17 21:30:09,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2022-03-17 21:30:09,451 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:09,451 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:09,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:09,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:09,668 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -799775801, now seen corresponding path program 2 times
[2022-03-17 21:30:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:09,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250491502]
[2022-03-17 21:30:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:09,674 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:09,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531592713]
[2022-03-17 21:30:09,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-03-17 21:30:09,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:09,677 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:09,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2022-03-17 21:30:09,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-03-17 21:30:09,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-03-17 21:30:09,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-03-17 21:30:09,718 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-03-17 21:30:09,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:09,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:09,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250491502]
[2022-03-17 21:30:09,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:09,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531592713]
[2022-03-17 21:30:09,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531592713] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:09,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:09,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-03-17 21:30:09,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160367594]
[2022-03-17 21:30:09,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:09,775 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-03-17 21:30:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-03-17 21:30:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-03-17 21:30:09,775 INFO L87 Difference]: Start difference. First operand 1072 states and 1543 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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)
[2022-03-17 21:30:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:09,914 INFO L93 Difference]: Finished difference Result 1700 states and 2539 transitions.
[2022-03-17 21:30:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-03-17 21:30:09,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 44
[2022-03-17 21:30:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:09,919 INFO L225 Difference]: With dead ends: 1700
[2022-03-17 21:30:09,920 INFO L226 Difference]: Without dead ends: 1234
[2022-03-17 21:30:09,921 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-03-17 21:30:09,921 INFO L912 BasicCegarLoop]: 62 mSDtfsCounter, 29 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:09,922 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 195 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states.
[2022-03-17 21:30:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 995.
[2022-03-17 21:30:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 660 states have (on average 1.3015151515151515) internal successors, (859), 690 states have internal predecessors, (859), 278 states have call successors, (278), 57 states have call predecessors, (278), 56 states have return successors, (271), 247 states have call predecessors, (271), 271 states have call successors, (271)
[2022-03-17 21:30:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1408 transitions.
[2022-03-17 21:30:10,026 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1408 transitions. Word has length 44
[2022-03-17 21:30:10,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:10,026 INFO L478 AbstractCegarLoop]: Abstraction has 995 states and 1408 transitions.
[2022-03-17 21:30:10,026 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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)
[2022-03-17 21:30:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1408 transitions.
[2022-03-17 21:30:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2022-03-17 21:30:10,026 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:10,026 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:10,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:10,243 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2022-03-17 21:30:10,243 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2059301326, now seen corresponding path program 1 times
[2022-03-17 21:30:10,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:10,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520984022]
[2022-03-17 21:30:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:10,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:10,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150519436]
[2022-03-17 21:30:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:10,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:10,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:10,259 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:10,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2022-03-17 21:30:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:10,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 57 conjunts are in the unsatisfiable core
[2022-03-17 21:30:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-03-17 21:30:10,819 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-03-17 21:30:11,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:11,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520984022]
[2022-03-17 21:30:11,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:11,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150519436]
[2022-03-17 21:30:11,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150519436] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:11,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:11,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21
[2022-03-17 21:30:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922824119]
[2022-03-17 21:30:11,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:11,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-03-17 21:30:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-03-17 21:30:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420
[2022-03-17 21:30:11,448 INFO L87 Difference]: Start difference. First operand 995 states and 1408 transitions. Second operand has 21 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 8 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11)
[2022-03-17 21:30:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:17,228 INFO L93 Difference]: Finished difference Result 1412 states and 2014 transitions.
[2022-03-17 21:30:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-03-17 21:30:17,228 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 8 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) Word has length 58
[2022-03-17 21:30:17,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:17,233 INFO L225 Difference]: With dead ends: 1412
[2022-03-17 21:30:17,233 INFO L226 Difference]: Without dead ends: 1404
[2022-03-17 21:30:17,235 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560
[2022-03-17 21:30:17,235 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 186 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:17,236 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 676 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-03-17 21:30:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states.
[2022-03-17 21:30:17,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1226.
[2022-03-17 21:30:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 845 states have (on average 1.2970414201183431) internal successors, (1096), 864 states have internal predecessors, (1096), 308 states have call successors, (308), 73 states have call predecessors, (308), 72 states have return successors, (303), 288 states have call predecessors, (303), 303 states have call successors, (303)
[2022-03-17 21:30:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1707 transitions.
[2022-03-17 21:30:17,397 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1707 transitions. Word has length 58
[2022-03-17 21:30:17,397 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:17,397 INFO L478 AbstractCegarLoop]: Abstraction has 1226 states and 1707 transitions.
[2022-03-17 21:30:17,397 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 8 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11)
[2022-03-17 21:30:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1707 transitions.
[2022-03-17 21:30:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2022-03-17 21:30:17,398 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:17,398 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:17,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2022-03-17 21:30:17,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2022-03-17 21:30:17,611 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1248898955, now seen corresponding path program 1 times
[2022-03-17 21:30:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:17,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969829111]
[2022-03-17 21:30:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:17,618 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:17,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942589319]
[2022-03-17 21:30:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:17,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:17,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:17,619 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:17,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2022-03-17 21:30:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:17,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-03-17 21:30:17,662 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-03-17 21:30:17,802 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-03-17 21:30:17,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:17,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969829111]
[2022-03-17 21:30:17,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:17,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942589319]
[2022-03-17 21:30:17,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942589319] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:17,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:17,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2022-03-17 21:30:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165954396]
[2022-03-17 21:30:17,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:17,960 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-03-17 21:30:17,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-03-17 21:30:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306
[2022-03-17 21:30:17,961 INFO L87 Difference]: Start difference. First operand 1226 states and 1707 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14)
[2022-03-17 21:30:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:18,583 INFO L93 Difference]: Finished difference Result 2565 states and 3679 transitions.
[2022-03-17 21:30:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-03-17 21:30:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 64
[2022-03-17 21:30:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:18,591 INFO L225 Difference]: With dead ends: 2565
[2022-03-17 21:30:18,591 INFO L226 Difference]: Without dead ends: 2543
[2022-03-17 21:30:18,592 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=287, Invalid=525, Unknown=0, NotChecked=0, Total=812
[2022-03-17 21:30:18,592 INFO L912 BasicCegarLoop]: 85 mSDtfsCounter, 385 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:18,592 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 488 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-03-17 21:30:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states.
[2022-03-17 21:30:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2406.
[2022-03-17 21:30:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1658 states have (on average 1.3094089264173703) internal successors, (2171), 1717 states have internal predecessors, (2171), 631 states have call successors, (631), 117 states have call predecessors, (631), 116 states have return successors, (623), 571 states have call predecessors, (623), 623 states have call successors, (623)
[2022-03-17 21:30:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 3425 transitions.
[2022-03-17 21:30:18,895 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 3425 transitions. Word has length 64
[2022-03-17 21:30:18,895 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:18,895 INFO L478 AbstractCegarLoop]: Abstraction has 2406 states and 3425 transitions.
[2022-03-17 21:30:18,896 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14)
[2022-03-17 21:30:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 3425 transitions.
[2022-03-17 21:30:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-03-17 21:30:18,896 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:18,896 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-03-17 21:30:18,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:19,105 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2022-03-17 21:30:19,105 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:19,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:19,105 INFO L85 PathProgramCache]: Analyzing trace with hash -934249537, now seen corresponding path program 1 times
[2022-03-17 21:30:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:19,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363163606]
[2022-03-17 21:30:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:19,111 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:19,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285077761]
[2022-03-17 21:30:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:19,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:19,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:19,114 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:19,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2022-03-17 21:30:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:19,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-03-17 21:30:19,153 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2022-03-17 21:30:19,310 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2022-03-17 21:30:19,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:19,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363163606]
[2022-03-17 21:30:19,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:19,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285077761]
[2022-03-17 21:30:19,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285077761] provided 1 perfect and 1 imperfect interpolant sequences
[2022-03-17 21:30:19,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-03-17 21:30:19,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11
[2022-03-17 21:30:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076399115]
[2022-03-17 21:30:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:19,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-03-17 21:30:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-03-17 21:30:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2022-03-17 21:30:19,425 INFO L87 Difference]: Start difference. First operand 2406 states and 3425 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-03-17 21:30:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:19,731 INFO L93 Difference]: Finished difference Result 2467 states and 3485 transitions.
[2022-03-17 21:30:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-03-17 21:30:19,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67
[2022-03-17 21:30:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:19,738 INFO L225 Difference]: With dead ends: 2467
[2022-03-17 21:30:19,739 INFO L226 Difference]: Without dead ends: 2465
[2022-03-17 21:30:19,739 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2022-03-17 21:30:19,740 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:19,740 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 153 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states.
[2022-03-17 21:30:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2442.
[2022-03-17 21:30:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 1685 states have (on average 1.3032640949554897) internal successors, (2196), 1744 states have internal predecessors, (2196), 631 states have call successors, (631), 126 states have call predecessors, (631), 125 states have return successors, (623), 571 states have call predecessors, (623), 623 states have call successors, (623)
[2022-03-17 21:30:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3450 transitions.
[2022-03-17 21:30:20,059 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3450 transitions. Word has length 67
[2022-03-17 21:30:20,059 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:20,060 INFO L478 AbstractCegarLoop]: Abstraction has 2442 states and 3450 transitions.
[2022-03-17 21:30:20,060 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-03-17 21:30:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3450 transitions.
[2022-03-17 21:30:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2022-03-17 21:30:20,063 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:20,063 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-03-17 21:30:20,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:20,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:20,279 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1422612783, now seen corresponding path program 1 times
[2022-03-17 21:30:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:20,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979412985]
[2022-03-17 21:30:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:20,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:20,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:20,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965942530]
[2022-03-17 21:30:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:20,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:20,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:20,288 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:20,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2022-03-17 21:30:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:20,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-03-17 21:30:20,331 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked.
[2022-03-17 21:30:20,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-03-17 21:30:20,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:20,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979412985]
[2022-03-17 21:30:20,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:20,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965942530]
[2022-03-17 21:30:20,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965942530] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 21:30:20,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 21:30:20,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-03-17 21:30:20,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585519597]
[2022-03-17 21:30:20,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 21:30:20,430 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-03-17 21:30:20,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:20,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-03-17 21:30:20,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-03-17 21:30:20,430 INFO L87 Difference]: Start difference. First operand 2442 states and 3450 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2022-03-17 21:30:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:20,802 INFO L93 Difference]: Finished difference Result 4377 states and 6175 transitions.
[2022-03-17 21:30:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-03-17 21:30:20,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 73
[2022-03-17 21:30:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:20,809 INFO L225 Difference]: With dead ends: 4377
[2022-03-17 21:30:20,810 INFO L226 Difference]: Without dead ends: 2578
[2022-03-17 21:30:20,815 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-03-17 21:30:20,815 INFO L912 BasicCegarLoop]: 48 mSDtfsCounter, 12 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:20,815 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 21:30:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states.
[2022-03-17 21:30:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 2372.
[2022-03-17 21:30:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 1689 states have (on average 1.2948490230905862) internal successors, (2187), 1720 states have internal predecessors, (2187), 559 states have call successors, (559), 124 states have call predecessors, (559), 123 states have return successors, (551), 527 states have call predecessors, (551), 551 states have call successors, (551)
[2022-03-17 21:30:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3297 transitions.
[2022-03-17 21:30:21,151 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3297 transitions. Word has length 73
[2022-03-17 21:30:21,152 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:21,152 INFO L478 AbstractCegarLoop]: Abstraction has 2372 states and 3297 transitions.
[2022-03-17 21:30:21,152 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2022-03-17 21:30:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3297 transitions.
[2022-03-17 21:30:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-03-17 21:30:21,152 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:21,153 INFO L500 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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]
[2022-03-17 21:30:21,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:21,355 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:21,355 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:21,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1662269742, now seen corresponding path program 2 times
[2022-03-17 21:30:21,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:21,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804761730]
[2022-03-17 21:30:21,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:21,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:21,362 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:21,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999193296]
[2022-03-17 21:30:21,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-03-17 21:30:21,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:21,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:21,363 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:21,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2022-03-17 21:30:21,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-03-17 21:30:21,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-03-17 21:30:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 82 conjunts are in the unsatisfiable core
[2022-03-17 21:30:21,413 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2022-03-17 21:30:22,482 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2022-03-17 21:30:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804761730]
[2022-03-17 21:30:23,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999193296]
[2022-03-17 21:30:23,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999193296] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:23,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:23,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 28
[2022-03-17 21:30:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882632357]
[2022-03-17 21:30:23,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:23,619 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-03-17 21:30:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-03-17 21:30:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756
[2022-03-17 21:30:23,628 INFO L87 Difference]: Start difference. First operand 2372 states and 3297 transitions. Second operand has 28 states, 26 states have (on average 3.0) internal successors, (78), 22 states have internal predecessors, (78), 9 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14)
[2022-03-17 21:30:33,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:30:35,194 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 []
[2022-03-17 21:30:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:30:40,325 INFO L93 Difference]: Finished difference Result 2869 states and 3894 transitions.
[2022-03-17 21:30:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-03-17 21:30:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.0) internal successors, (78), 22 states have internal predecessors, (78), 9 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 75
[2022-03-17 21:30:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:30:40,334 INFO L225 Difference]: With dead ends: 2869
[2022-03-17 21:30:40,334 INFO L226 Difference]: Without dead ends: 2863
[2022-03-17 21:30:40,336 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=469, Invalid=1981, Unknown=0, NotChecked=0, Total=2450
[2022-03-17 21:30:40,336 INFO L912 BasicCegarLoop]: 61 mSDtfsCounter, 297 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 303 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time
[2022-03-17 21:30:40,336 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 848 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1024 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time]
[2022-03-17 21:30:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states.
[2022-03-17 21:30:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2736.
[2022-03-17 21:30:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 1985 states have (on average 1.2916876574307306) internal successors, (2564), 2026 states have internal predecessors, (2564), 594 states have call successors, (594), 158 states have call predecessors, (594), 156 states have return successors, (587), 551 states have call predecessors, (587), 587 states have call successors, (587)
[2022-03-17 21:30:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3745 transitions.
[2022-03-17 21:30:40,693 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3745 transitions. Word has length 75
[2022-03-17 21:30:40,693 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:30:40,693 INFO L478 AbstractCegarLoop]: Abstraction has 2736 states and 3745 transitions.
[2022-03-17 21:30:40,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.0) internal successors, (78), 22 states have internal predecessors, (78), 9 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14)
[2022-03-17 21:30:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3745 transitions.
[2022-03-17 21:30:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2022-03-17 21:30:40,694 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:30:40,695 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:30:40,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2022-03-17 21:30:40,902 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2022-03-17 21:30:40,903 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:30:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:30:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 612727057, now seen corresponding path program 1 times
[2022-03-17 21:30:40,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:30:40,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709039563]
[2022-03-17 21:30:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:40,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:30:40,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:30:40,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907918960]
[2022-03-17 21:30:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:30:40,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:30:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:30:40,915 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:30:40,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2022-03-17 21:30:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:30:40,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 86 conjunts are in the unsatisfiable core
[2022-03-17 21:30:40,966 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:30:42,255 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 52 proven. 35 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2022-03-17 21:30:42,255 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:30:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 65 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked.
[2022-03-17 21:30:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:30:46,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709039563]
[2022-03-17 21:30:46,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:30:46,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907918960]
[2022-03-17 21:30:46,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907918960] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:30:46,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:30:46,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 30
[2022-03-17 21:30:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101269805]
[2022-03-17 21:30:46,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:30:46,757 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-03-17 21:30:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:30:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-03-17 21:30:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870
[2022-03-17 21:30:46,758 INFO L87 Difference]: Start difference. First operand 2736 states and 3745 transitions. Second operand has 30 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19)
[2022-03-17 21:30:56,831 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 []
[2022-03-17 21:31:02,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:10,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:14,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:20,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:27,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:36,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:39,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:47,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:31:49,124 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 []
[2022-03-17 21:31:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:31:55,793 INFO L93 Difference]: Finished difference Result 3359 states and 4530 transitions.
[2022-03-17 21:31:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2022-03-17 21:31:55,795 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 88
[2022-03-17 21:31:55,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:31:55,804 INFO L225 Difference]: With dead ends: 3359
[2022-03-17 21:31:55,805 INFO L226 Difference]: Without dead ends: 3328
[2022-03-17 21:31:55,807 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=1794, Invalid=9336, Unknown=0, NotChecked=0, Total=11130
[2022-03-17 21:31:55,808 INFO L912 BasicCegarLoop]: 89 mSDtfsCounter, 416 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 527 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time
[2022-03-17 21:31:55,808 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1244 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 1550 Invalid, 9 Unknown, 0 Unchecked, 32.8s Time]
[2022-03-17 21:31:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states.
[2022-03-17 21:31:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 3022.
[2022-03-17 21:31:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 2209 states have (on average 1.2928927116342237) internal successors, (2856), 2253 states have internal predecessors, (2856), 637 states have call successors, (637), 177 states have call predecessors, (637), 175 states have return successors, (630), 591 states have call predecessors, (630), 630 states have call successors, (630)
[2022-03-17 21:31:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4123 transitions.
[2022-03-17 21:31:56,365 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4123 transitions. Word has length 88
[2022-03-17 21:31:56,365 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:31:56,365 INFO L478 AbstractCegarLoop]: Abstraction has 3022 states and 4123 transitions.
[2022-03-17 21:31:56,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19)
[2022-03-17 21:31:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4123 transitions.
[2022-03-17 21:31:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-03-17 21:31:56,366 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:31:56,367 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:31:56,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2022-03-17 21:31:56,573 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2022-03-17 21:31:56,573 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:31:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:31:56,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1189405093, now seen corresponding path program 3 times
[2022-03-17 21:31:56,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:31:56,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859608311]
[2022-03-17 21:31:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:31:56,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:31:56,579 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:31:56,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043260445]
[2022-03-17 21:31:56,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-03-17 21:31:56,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:31:56,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:31:56,584 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:31:56,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2022-03-17 21:31:56,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-03-17 21:31:56,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-03-17 21:31:56,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 41 conjunts are in the unsatisfiable core
[2022-03-17 21:31:56,648 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:31:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked.
[2022-03-17 21:31:57,165 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:31:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked.
[2022-03-17 21:31:57,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:31:57,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859608311]
[2022-03-17 21:31:57,433 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:31:57,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043260445]
[2022-03-17 21:31:57,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043260445] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:31:57,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:31:57,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2022-03-17 21:31:57,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786206158]
[2022-03-17 21:31:57,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:31:57,434 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-03-17 21:31:57,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:31:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-03-17 21:31:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240
[2022-03-17 21:31:57,435 INFO L87 Difference]: Start difference. First operand 3022 states and 4123 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19)
[2022-03-17 21:32:00,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:32:04,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:32:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:32:07,161 INFO L93 Difference]: Finished difference Result 3316 states and 4471 transitions.
[2022-03-17 21:32:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-03-17 21:32:07,161 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 97
[2022-03-17 21:32:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:32:07,173 INFO L225 Difference]: With dead ends: 3316
[2022-03-17 21:32:07,173 INFO L226 Difference]: Without dead ends: 3312
[2022-03-17 21:32:07,174 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930
[2022-03-17 21:32:07,174 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 106 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2022-03-17 21:32:07,175 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 672 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time]
[2022-03-17 21:32:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states.
[2022-03-17 21:32:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3232.
[2022-03-17 21:32:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 2379 states have (on average 1.289197141656158) internal successors, (3067), 2424 states have internal predecessors, (3067), 658 states have call successors, (658), 196 states have call predecessors, (658), 194 states have return successors, (652), 611 states have call predecessors, (652), 652 states have call successors, (652)
[2022-03-17 21:32:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4377 transitions.
[2022-03-17 21:32:07,783 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4377 transitions. Word has length 97
[2022-03-17 21:32:07,783 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:32:07,783 INFO L478 AbstractCegarLoop]: Abstraction has 3232 states and 4377 transitions.
[2022-03-17 21:32:07,783 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19)
[2022-03-17 21:32:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4377 transitions.
[2022-03-17 21:32:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-03-17 21:32:07,784 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:32:07,784 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:32:07,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2022-03-17 21:32:07,991 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:07,991 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:32:07,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:32:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1037830812, now seen corresponding path program 1 times
[2022-03-17 21:32:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:32:07,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120618718]
[2022-03-17 21:32:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:32:07,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:32:07,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595451959]
[2022-03-17 21:32:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:07,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:07,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:32:07,999 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:32:07,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2022-03-17 21:32:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:32:08,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-03-17 21:32:08,048 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:32:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 27 proven. 108 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2022-03-17 21:32:08,232 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:32:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 27 proven. 44 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2022-03-17 21:32:08,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:32:08,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120618718]
[2022-03-17 21:32:08,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:32:08,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595451959]
[2022-03-17 21:32:08,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595451959] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:32:08,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:32:08,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24
[2022-03-17 21:32:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459459812]
[2022-03-17 21:32:08,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:32:08,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-03-17 21:32:08,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:32:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-03-17 21:32:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552
[2022-03-17 21:32:08,467 INFO L87 Difference]: Start difference. First operand 3232 states and 4377 transitions. Second operand has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22)
[2022-03-17 21:32:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:32:10,170 INFO L93 Difference]: Finished difference Result 7339 states and 10413 transitions.
[2022-03-17 21:32:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-03-17 21:32:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 98
[2022-03-17 21:32:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:32:10,193 INFO L225 Difference]: With dead ends: 7339
[2022-03-17 21:32:10,193 INFO L226 Difference]: Without dead ends: 6142
[2022-03-17 21:32:10,197 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=585, Invalid=1055, Unknown=0, NotChecked=0, Total=1640
[2022-03-17 21:32:10,200 INFO L912 BasicCegarLoop]: 113 mSDtfsCounter, 625 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-03-17 21:32:10,201 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 589 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-03-17 21:32:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states.
[2022-03-17 21:32:11,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 5893.
[2022-03-17 21:32:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 4083 states have (on average 1.2738182708792554) internal successors, (5201), 4120 states have internal predecessors, (5201), 1457 states have call successors, (1457), 354 states have call predecessors, (1457), 352 states have return successors, (1445), 1418 states have call predecessors, (1445), 1445 states have call successors, (1445)
[2022-03-17 21:32:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 8103 transitions.
[2022-03-17 21:32:11,436 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 8103 transitions. Word has length 98
[2022-03-17 21:32:11,436 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:32:11,436 INFO L478 AbstractCegarLoop]: Abstraction has 5893 states and 8103 transitions.
[2022-03-17 21:32:11,436 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22)
[2022-03-17 21:32:11,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 8103 transitions.
[2022-03-17 21:32:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2022-03-17 21:32:11,438 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:32:11,438 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:32:11,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2022-03-17 21:32:11,638 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:11,638 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:32:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:32:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2067527905, now seen corresponding path program 2 times
[2022-03-17 21:32:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:32:11,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885079386]
[2022-03-17 21:32:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:11,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:32:11,648 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:32:11,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219218649]
[2022-03-17 21:32:11,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-03-17 21:32:11,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:11,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:32:11,649 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:32:11,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2022-03-17 21:32:11,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-03-17 21:32:11,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-03-17 21:32:11,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 74 conjunts are in the unsatisfiable core
[2022-03-17 21:32:11,703 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:32:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 93 proven. 46 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2022-03-17 21:32:12,717 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:32:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 117 proven. 12 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked.
[2022-03-17 21:32:13,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:32:13,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885079386]
[2022-03-17 21:32:13,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:32:13,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219218649]
[2022-03-17 21:32:13,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219218649] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:32:13,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:32:13,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24
[2022-03-17 21:32:13,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598608965]
[2022-03-17 21:32:13,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:32:13,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-03-17 21:32:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:32:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-03-17 21:32:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552
[2022-03-17 21:32:13,707 INFO L87 Difference]: Start difference. First operand 5893 states and 8103 transitions. Second operand has 24 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23)
[2022-03-17 21:32:17,778 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 []
[2022-03-17 21:32:22,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-03-17 21:32:24,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:32:24,095 INFO L93 Difference]: Finished difference Result 7028 states and 9635 transitions.
[2022-03-17 21:32:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-03-17 21:32:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) Word has length 108
[2022-03-17 21:32:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:32:24,108 INFO L225 Difference]: With dead ends: 7028
[2022-03-17 21:32:24,109 INFO L226 Difference]: Without dead ends: 6972
[2022-03-17 21:32:24,110 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=340, Invalid=1466, Unknown=0, NotChecked=0, Total=1806
[2022-03-17 21:32:24,111 INFO L912 BasicCegarLoop]: 77 mSDtfsCounter, 249 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 429 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2022-03-17 21:32:24,111 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 750 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1108 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time]
[2022-03-17 21:32:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states.
[2022-03-17 21:32:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6264.
[2022-03-17 21:32:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6264 states, 4276 states have (on average 1.2815715622076707) internal successors, (5480), 4311 states have internal predecessors, (5480), 1610 states have call successors, (1610), 378 states have call predecessors, (1610), 377 states have return successors, (1601), 1574 states have call predecessors, (1601), 1601 states have call successors, (1601)
[2022-03-17 21:32:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 8691 transitions.
[2022-03-17 21:32:25,502 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 8691 transitions. Word has length 108
[2022-03-17 21:32:25,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:32:25,502 INFO L478 AbstractCegarLoop]: Abstraction has 6264 states and 8691 transitions.
[2022-03-17 21:32:25,502 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23)
[2022-03-17 21:32:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 8691 transitions.
[2022-03-17 21:32:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-03-17 21:32:25,504 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:32:25,504 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:32:25,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2022-03-17 21:32:25,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2022-03-17 21:32:25,719 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:32:25,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:32:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash -55503749, now seen corresponding path program 1 times
[2022-03-17 21:32:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:32:25,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071536685]
[2022-03-17 21:32:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:32:25,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:32:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597980850]
[2022-03-17 21:32:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:25,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:32:25,730 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:32:25,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2022-03-17 21:32:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:32:25,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-03-17 21:32:25,788 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:32:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 44 proven. 116 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2022-03-17 21:32:25,993 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:32:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 44 proven. 52 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2022-03-17 21:32:26,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:32:26,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071536685]
[2022-03-17 21:32:26,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:32:26,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597980850]
[2022-03-17 21:32:26,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597980850] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:32:26,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:32:26,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24
[2022-03-17 21:32:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291556604]
[2022-03-17 21:32:26,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:32:26,223 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-03-17 21:32:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:32:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-03-17 21:32:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552
[2022-03-17 21:32:26,224 INFO L87 Difference]: Start difference. First operand 6264 states and 8691 transitions. Second operand has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22)
[2022-03-17 21:32:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:32:28,047 INFO L93 Difference]: Finished difference Result 9687 states and 13542 transitions.
[2022-03-17 21:32:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-03-17 21:32:28,047 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 105
[2022-03-17 21:32:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:32:28,061 INFO L225 Difference]: With dead ends: 9687
[2022-03-17 21:32:28,061 INFO L226 Difference]: Without dead ends: 6111
[2022-03-17 21:32:28,068 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=585, Invalid=1055, Unknown=0, NotChecked=0, Total=1640
[2022-03-17 21:32:28,068 INFO L912 BasicCegarLoop]: 116 mSDtfsCounter, 584 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-03-17 21:32:28,068 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 666 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-03-17 21:32:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states.
[2022-03-17 21:32:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 6057.
[2022-03-17 21:32:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6057 states, 4115 states have (on average 1.2021871202916161) internal successors, (4947), 4139 states have internal predecessors, (4947), 1564 states have call successors, (1564), 378 states have call predecessors, (1564), 377 states have return successors, (1555), 1539 states have call predecessors, (1555), 1555 states have call successors, (1555)
[2022-03-17 21:32:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6057 states to 6057 states and 8066 transitions.
[2022-03-17 21:32:29,449 INFO L78 Accepts]: Start accepts. Automaton has 6057 states and 8066 transitions. Word has length 105
[2022-03-17 21:32:29,451 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:32:29,451 INFO L478 AbstractCegarLoop]: Abstraction has 6057 states and 8066 transitions.
[2022-03-17 21:32:29,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22)
[2022-03-17 21:32:29,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6057 states and 8066 transitions.
[2022-03-17 21:32:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2022-03-17 21:32:29,454 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:32:29,454 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 7, 7, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:32:29,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2022-03-17 21:32:29,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2022-03-17 21:32:29,667 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:32:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:32:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1765875055, now seen corresponding path program 2 times
[2022-03-17 21:32:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:32:29,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622044967]
[2022-03-17 21:32:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:32:29,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:32:29,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084373020]
[2022-03-17 21:32:29,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-03-17 21:32:29,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:29,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:32:29,676 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:32:29,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2022-03-17 21:32:29,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-03-17 21:32:29,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-03-17 21:32:29,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-03-17 21:32:29,736 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:32:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 24 proven. 311 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2022-03-17 21:32:29,997 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:32:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 24 proven. 119 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2022-03-17 21:32:30,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:32:30,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622044967]
[2022-03-17 21:32:30,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:32:30,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084373020]
[2022-03-17 21:32:30,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084373020] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:32:30,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:32:30,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24
[2022-03-17 21:32:30,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316058954]
[2022-03-17 21:32:30,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:32:30,260 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-03-17 21:32:30,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:32:30,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-03-17 21:32:30,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552
[2022-03-17 21:32:30,261 INFO L87 Difference]: Start difference. First operand 6057 states and 8066 transitions. Second operand has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 9 states have call successors, (32), 6 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30)
[2022-03-17 21:32:32,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:32:32,081 INFO L93 Difference]: Finished difference Result 6151 states and 8158 transitions.
[2022-03-17 21:32:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-03-17 21:32:32,082 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 9 states have call successors, (32), 6 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) Word has length 132
[2022-03-17 21:32:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:32:32,092 INFO L225 Difference]: With dead ends: 6151
[2022-03-17 21:32:32,092 INFO L226 Difference]: Without dead ends: 6119
[2022-03-17 21:32:32,094 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=592, Invalid=1048, Unknown=0, NotChecked=0, Total=1640
[2022-03-17 21:32:32,094 INFO L912 BasicCegarLoop]: 115 mSDtfsCounter, 615 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-03-17 21:32:32,094 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 645 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-03-17 21:32:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6119 states.
[2022-03-17 21:32:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6119 to 6101.
[2022-03-17 21:32:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6101 states, 4159 states have (on average 1.190430391921135) internal successors, (4951), 4183 states have internal predecessors, (4951), 1564 states have call successors, (1564), 378 states have call predecessors, (1564), 377 states have return successors, (1555), 1539 states have call predecessors, (1555), 1555 states have call successors, (1555)
[2022-03-17 21:32:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6101 states to 6101 states and 8070 transitions.
[2022-03-17 21:32:33,399 INFO L78 Accepts]: Start accepts. Automaton has 6101 states and 8070 transitions. Word has length 132
[2022-03-17 21:32:33,399 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:32:33,399 INFO L478 AbstractCegarLoop]: Abstraction has 6101 states and 8070 transitions.
[2022-03-17 21:32:33,399 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 9 states have call successors, (32), 6 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30)
[2022-03-17 21:32:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6101 states and 8070 transitions.
[2022-03-17 21:32:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2022-03-17 21:32:33,402 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:32:33,402 INFO L500 BasicCegarLoop]: trace histogram [19, 18, 18, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:32:33,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2022-03-17 21:32:33,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2022-03-17 21:32:33,619 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:32:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:32:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1010003828, now seen corresponding path program 1 times
[2022-03-17 21:32:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:32:33,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703912246]
[2022-03-17 21:32:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:33,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:32:33,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:32:33,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769860645]
[2022-03-17 21:32:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:32:33,628 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:32:33,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2022-03-17 21:32:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 21:32:33,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-03-17 21:32:33,694 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:32:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 82 proven. 32 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked.
[2022-03-17 21:32:34,021 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:32:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 87 proven. 17 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked.
[2022-03-17 21:32:34,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:32:34,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703912246]
[2022-03-17 21:32:34,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:32:34,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769860645]
[2022-03-17 21:32:34,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769860645] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:32:34,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:32:34,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12
[2022-03-17 21:32:34,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727034724]
[2022-03-17 21:32:34,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:32:34,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-03-17 21:32:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:32:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-03-17 21:32:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132
[2022-03-17 21:32:34,277 INFO L87 Difference]: Start difference. First operand 6101 states and 8070 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 8 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31)
[2022-03-17 21:32:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:32:37,403 INFO L93 Difference]: Finished difference Result 8132 states and 10883 transitions.
[2022-03-17 21:32:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-03-17 21:32:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 8 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 146
[2022-03-17 21:32:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:32:37,418 INFO L225 Difference]: With dead ends: 8132
[2022-03-17 21:32:37,419 INFO L226 Difference]: Without dead ends: 8114
[2022-03-17 21:32:37,421 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 285 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342
[2022-03-17 21:32:37,421 INFO L912 BasicCegarLoop]: 86 mSDtfsCounter, 65 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-03-17 21:32:37,421 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 515 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-03-17 21:32:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8114 states.
[2022-03-17 21:32:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8114 to 6076.
[2022-03-17 21:32:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 4177 states have (on average 1.1836246109648072) internal successors, (4944), 4193 states have internal predecessors, (4944), 1501 states have call successors, (1501), 399 states have call predecessors, (1501), 397 states have return successors, (1499), 1483 states have call predecessors, (1499), 1499 states have call successors, (1499)
[2022-03-17 21:32:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 7944 transitions.
[2022-03-17 21:32:38,839 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 7944 transitions. Word has length 146
[2022-03-17 21:32:38,839 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:32:38,839 INFO L478 AbstractCegarLoop]: Abstraction has 6076 states and 7944 transitions.
[2022-03-17 21:32:38,839 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 8 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31)
[2022-03-17 21:32:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 7944 transitions.
[2022-03-17 21:32:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2022-03-17 21:32:38,844 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:32:38,844 INFO L500 BasicCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:32:38,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0
[2022-03-17 21:32:39,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2022-03-17 21:32:39,059 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:32:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:32:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2087386651, now seen corresponding path program 3 times
[2022-03-17 21:32:39,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:32:39,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708110427]
[2022-03-17 21:32:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:39,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:32:39,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:32:39,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102432510]
[2022-03-17 21:32:39,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-03-17 21:32:39,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:32:39,069 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:32:39,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2022-03-17 21:32:39,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2022-03-17 21:32:39,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-03-17 21:32:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-03-17 21:32:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-03-17 21:32:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 368 proven. 21 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked.
[2022-03-17 21:32:39,357 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-03-17 21:32:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 120 proven. 21 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked.
[2022-03-17 21:32:39,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 21:32:39,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708110427]
[2022-03-17 21:32:39,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-03-17 21:32:39,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102432510]
[2022-03-17 21:32:39,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102432510] provided 0 perfect and 2 imperfect interpolant sequences
[2022-03-17 21:32:39,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-03-17 21:32:39,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2022-03-17 21:32:39,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517078133]
[2022-03-17 21:32:39,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-03-17 21:32:39,591 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-03-17 21:32:39,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 21:32:39,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-03-17 21:32:39,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-03-17 21:32:39,591 INFO L87 Difference]: Start difference. First operand 6076 states and 7944 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27)
[2022-03-17 21:32:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 21:32:41,659 INFO L93 Difference]: Finished difference Result 12307 states and 16510 transitions.
[2022-03-17 21:32:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-03-17 21:32:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 165
[2022-03-17 21:32:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 21:32:41,674 INFO L225 Difference]: With dead ends: 12307
[2022-03-17 21:32:41,674 INFO L226 Difference]: Without dead ends: 8072
[2022-03-17 21:32:41,681 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 324 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2022-03-17 21:32:41,682 INFO L912 BasicCegarLoop]: 77 mSDtfsCounter, 29 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-03-17 21:32:41,682 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 333 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-03-17 21:32:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8072 states.
[2022-03-17 21:32:43,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8072 to 7412.
[2022-03-17 21:32:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 4982 states have (on average 1.1989160979526294) internal successors, (5973), 5029 states have internal predecessors, (5973), 2056 states have call successors, (2056), 375 states have call predecessors, (2056), 373 states have return successors, (2054), 2007 states have call predecessors, (2054), 2054 states have call successors, (2054)
[2022-03-17 21:32:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 10083 transitions.
[2022-03-17 21:32:43,597 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 10083 transitions. Word has length 165
[2022-03-17 21:32:43,597 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-03-17 21:32:43,598 INFO L478 AbstractCegarLoop]: Abstraction has 7412 states and 10083 transitions.
[2022-03-17 21:32:43,598 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27)
[2022-03-17 21:32:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 10083 transitions.
[2022-03-17 21:32:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179
[2022-03-17 21:32:43,603 INFO L492 BasicCegarLoop]: Found error trace
[2022-03-17 21:32:43,603 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 11, 10, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1]
[2022-03-17 21:32:43,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2022-03-17 21:32:43,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2022-03-17 21:32:43,836 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 21:32:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 21:32:43,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1364196507, now seen corresponding path program 1 times
[2022-03-17 21:32:43,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 21:32:43,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805438822]
[2022-03-17 21:32:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:43,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 21:32:43,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-03-17 21:32:43,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072500248]
[2022-03-17 21:32:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 21:32:43,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:43,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 21:32:43,844 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-03-17 21:32:43,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2022-03-17 21:32:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-03-17 21:32:44,039 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-03-17 21:32:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-03-17 21:32:44,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-03-17 21:32:44,261 INFO L614 BasicCegarLoop]: Counterexample is feasible
[2022-03-17 21:32:44,262 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-03-17 21:32:44,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2022-03-17 21:32:44,481 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-03-17 21:32:44,484 INFO L718 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 21:32:44,486 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-03-17 21:32:44,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 09:32:44 BasicIcfg
[2022-03-17 21:32:44,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-03-17 21:32:44,539 INFO L158 Benchmark]: Toolchain (without parser) took 164418.34ms. Allocated memory was 180.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 129.4MB in the beginning and 1.1GB in the end (delta: -966.7MB). Peak memory consumption was 188.1MB. Max. memory is 8.0GB.
[2022-03-17 21:32:44,539 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-03-17 21:32:44,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.59ms. Allocated memory is still 180.4MB. Free memory was 129.2MB in the beginning and 156.1MB in the end (delta: -27.0MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB.
[2022-03-17 21:32:44,539 INFO L158 Benchmark]: Boogie Preprocessor took 31.32ms. Allocated memory is still 180.4MB. Free memory was 156.1MB in the beginning and 154.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-03-17 21:32:44,540 INFO L158 Benchmark]: RCFGBuilder took 258.24ms. Allocated memory is still 180.4MB. Free memory was 154.5MB in the beginning and 142.9MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-03-17 21:32:44,540 INFO L158 Benchmark]: IcfgTransformer took 21.22ms. Allocated memory is still 180.4MB. Free memory was 142.9MB in the beginning and 141.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-03-17 21:32:44,540 INFO L158 Benchmark]: TraceAbstraction took 163922.23ms. Allocated memory was 180.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 141.2MB in the beginning and 1.1GB in the end (delta: -954.8MB). Peak memory consumption was 199.1MB. Max. memory is 8.0GB.
[2022-03-17 21:32:44,540 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 180.4MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 171.59ms. Allocated memory is still 180.4MB. Free memory was 129.2MB in the beginning and 156.1MB in the end (delta: -27.0MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 31.32ms. Allocated memory is still 180.4MB. Free memory was 156.1MB in the beginning and 154.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 258.24ms. Allocated memory is still 180.4MB. Free memory was 154.5MB in the beginning and 142.9MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 21.22ms. Allocated memory is still 180.4MB. Free memory was 142.9MB in the beginning and 141.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 163922.23ms. Allocated memory was 180.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 141.2MB in the beginning and 1.1GB in the end (delta: -954.8MB). Peak memory consumption was 199.1MB. 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: 13]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L18] int counter = 0;
VAL [\old(counter)=27, counter=0]
[L20] int x, y;
[L21] long long a, b, p, q, r, s;
[L22] x = __VERIFIER_nondet_int()
[L23] y = __VERIFIER_nondet_int()
[L24] CALL assume_abort_if_not(x >= 1)
VAL [\old(cond)=1, \old(counter)=0, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0]
[L24] RET assume_abort_if_not(x >= 1)
VAL [\old(counter)=0, counter=0, x=13, y=21]
[L25] CALL assume_abort_if_not(y >= 1)
VAL [\old(cond)=1, \old(counter)=0, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0]
[L25] RET assume_abort_if_not(y >= 1)
VAL [\old(counter)=0, counter=0, x=13, y=21]
[L27] a = x
[L28] b = y
[L29] p = 1
[L30] q = 0
[L31] r = 0
[L32] s = 1
VAL [\old(counter)=0, a=13, b=21, counter=0, p=1, q=0, r=0, s=1, x=13, y=21]
[L34] EXPR counter++
VAL [\old(counter)=0, a=13, b=21, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=13, y=21]
[L34] COND TRUE counter++<20
[L35] COND FALSE !(!(b != 0))
[L37] long long c, k;
[L38] c = a
[L39] k = 0
VAL [\old(counter)=0, a=13, b=21, c=13, counter=1, k=0, p=1, q=0, r=0, s=1, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=13, b=21, c=13, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND TRUE !(c >= b)
VAL [\old(counter)=0, a=13, b=21, c=13, counter=2, k=0, p=1, q=0, r=0, s=1, x=13, y=21]
[L63] a = b
[L64] b = c
[L65] long long temp;
[L66] temp = p
[L67] p = q
[L68] q = temp - q * k
[L69] temp = r
[L70] r = s
[L71] s = temp - s * k
VAL [\old(counter)=0, a=21, b=13, c=13, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=13, y=21]
[L34] EXPR counter++
VAL [\old(counter)=0, a=21, b=13, c=13, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=13, y=21]
[L34] COND TRUE counter++<20
[L35] COND FALSE !(!(b != 0))
[L37] long long c, k;
[L38] c = a
[L39] k = 0
VAL [\old(counter)=0, a=21, b=13, c=21, counter=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=21, b=13, c=21, counter=4, counter++=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND FALSE !(!(c >= b))
[L44] long long d, v;
[L45] d = 1
[L46] v = b
VAL [\old(counter)=0, a=21, b=13, c=21, counter=4, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L48] EXPR counter++
VAL [\old(counter)=0, a=21, b=13, c=21, counter=5, counter++=4, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L48] COND TRUE counter++<20
[L49] CALL __VERIFIER_assert(a == y * r + x * p)
VAL [\old(cond)=1, \old(counter)=0, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5]
[L49] RET __VERIFIER_assert(a == y * r + x * p)
VAL [\old(counter)=0, a=21, b=13, c=21, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L50] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, \old(counter)=0, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5]
[L50] RET __VERIFIER_assert(b == x * q + y * s)
VAL [\old(counter)=0, a=21, b=13, c=21, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L51] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, \old(counter)=0, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5]
[L51] RET __VERIFIER_assert(a == k * b + c)
VAL [\old(counter)=0, a=21, b=13, c=21, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L52] CALL __VERIFIER_assert(v == b * d)
VAL [\old(cond)=1, \old(counter)=0, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5]
[L52] RET __VERIFIER_assert(v == b * d)
VAL [\old(counter)=0, a=21, b=13, c=21, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L54] COND TRUE !(c >= 2 * v)
VAL [\old(counter)=0, a=21, b=13, c=21, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L59] c = c - v
[L60] k = k + d
VAL [\old(counter)=0, a=21, b=13, c=8, counter=5, d=1, k=1, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=21, b=13, c=8, counter=6, counter++=5, d=1, k=1, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND TRUE !(c >= b)
VAL [\old(counter)=0, a=21, b=13, c=8, counter=6, d=1, k=1, p=0, q=1, r=1, s=0, temp=0, v=13, x=13, y=21]
[L63] a = b
[L64] b = c
[L65] long long temp;
[L66] temp = p
[L67] p = q
[L68] q = temp - q * k
[L69] temp = r
[L70] r = s
[L71] s = temp - s * k
VAL [\old(counter)=0, a=13, b=8, c=8, counter=6, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=13, x=13, y=21]
[L34] EXPR counter++
VAL [\old(counter)=0, a=13, b=8, c=8, counter=7, counter++=6, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=13, x=13, y=21]
[L34] COND TRUE counter++<20
[L35] COND FALSE !(!(b != 0))
[L37] long long c, k;
[L38] c = a
[L39] k = 0
VAL [\old(counter)=0, a=13, b=8, c=13, counter=7, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=13, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=13, b=8, c=13, counter=8, counter++=7, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=13, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND FALSE !(!(c >= b))
[L44] long long d, v;
[L45] d = 1
[L46] v = b
VAL [\old(counter)=0, a=13, b=8, c=13, counter=8, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L48] EXPR counter++
VAL [\old(counter)=0, a=13, b=8, c=13, counter=9, counter++=8, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L48] COND TRUE counter++<20
[L49] CALL __VERIFIER_assert(a == y * r + x * p)
VAL [\old(cond)=1, \old(counter)=0, counter=9]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9]
[L49] RET __VERIFIER_assert(a == y * r + x * p)
VAL [\old(counter)=0, a=13, b=8, c=13, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L50] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, \old(counter)=0, counter=9]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9]
[L50] RET __VERIFIER_assert(b == x * q + y * s)
VAL [\old(counter)=0, a=13, b=8, c=13, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L51] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, \old(counter)=0, counter=9]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9]
[L51] RET __VERIFIER_assert(a == k * b + c)
VAL [\old(counter)=0, a=13, b=8, c=13, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L52] CALL __VERIFIER_assert(v == b * d)
VAL [\old(cond)=1, \old(counter)=0, counter=9]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9]
[L52] RET __VERIFIER_assert(v == b * d)
VAL [\old(counter)=0, a=13, b=8, c=13, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L54] COND TRUE !(c >= 2 * v)
VAL [\old(counter)=0, a=13, b=8, c=13, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L59] c = c - v
[L60] k = k + d
VAL [\old(counter)=0, a=13, b=8, c=5, counter=9, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=13, b=8, c=5, counter=10, counter++=9, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND TRUE !(c >= b)
VAL [\old(counter)=0, a=13, b=8, c=5, counter=10, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=8, x=13, y=21]
[L63] a = b
[L64] b = c
[L65] long long temp;
[L66] temp = p
[L67] p = q
[L68] q = temp - q * k
[L69] temp = r
[L70] r = s
[L71] s = temp - s * k
VAL [\old(counter)=0, a=8, b=5, c=5, counter=10, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=8, x=13, y=21]
[L34] EXPR counter++
VAL [\old(counter)=0, a=8, b=5, c=5, counter=11, counter++=10, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=8, x=13, y=21]
[L34] COND TRUE counter++<20
[L35] COND FALSE !(!(b != 0))
[L37] long long c, k;
[L38] c = a
[L39] k = 0
VAL [\old(counter)=0, a=8, b=5, c=8, counter=11, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=8, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=8, b=5, c=8, counter=12, counter++=11, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=8, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND FALSE !(!(c >= b))
[L44] long long d, v;
[L45] d = 1
[L46] v = b
VAL [\old(counter)=0, a=8, b=5, c=8, counter=12, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L48] EXPR counter++
VAL [\old(counter)=0, a=8, b=5, c=8, counter=13, counter++=12, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L48] COND TRUE counter++<20
[L49] CALL __VERIFIER_assert(a == y * r + x * p)
VAL [\old(cond)=1, \old(counter)=0, counter=13]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13]
[L49] RET __VERIFIER_assert(a == y * r + x * p)
VAL [\old(counter)=0, a=8, b=5, c=8, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L50] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, \old(counter)=0, counter=13]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13]
[L50] RET __VERIFIER_assert(b == x * q + y * s)
VAL [\old(counter)=0, a=8, b=5, c=8, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L51] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, \old(counter)=0, counter=13]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13]
[L51] RET __VERIFIER_assert(a == k * b + c)
VAL [\old(counter)=0, a=8, b=5, c=8, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L52] CALL __VERIFIER_assert(v == b * d)
VAL [\old(cond)=1, \old(counter)=0, counter=13]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13]
[L52] RET __VERIFIER_assert(v == b * d)
VAL [\old(counter)=0, a=8, b=5, c=8, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L54] COND TRUE !(c >= 2 * v)
VAL [\old(counter)=0, a=8, b=5, c=8, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L59] c = c - v
[L60] k = k + d
VAL [\old(counter)=0, a=8, b=5, c=3, counter=13, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=8, b=5, c=3, counter=14, counter++=13, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND TRUE !(c >= b)
VAL [\old(counter)=0, a=8, b=5, c=3, counter=14, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=5, x=13, y=21]
[L63] a = b
[L64] b = c
[L65] long long temp;
[L66] temp = p
[L67] p = q
[L68] q = temp - q * k
[L69] temp = r
[L70] r = s
[L71] s = temp - s * k
VAL [\old(counter)=0, a=5, b=3, c=3, counter=14, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=5, x=13, y=21]
[L34] EXPR counter++
VAL [\old(counter)=0, a=5, b=3, c=3, counter=15, counter++=14, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=5, x=13, y=21]
[L34] COND TRUE counter++<20
[L35] COND FALSE !(!(b != 0))
[L37] long long c, k;
[L38] c = a
[L39] k = 0
VAL [\old(counter)=0, a=5, b=3, c=5, counter=15, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=5, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=5, b=3, c=5, counter=16, counter++=15, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=5, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND FALSE !(!(c >= b))
[L44] long long d, v;
[L45] d = 1
[L46] v = b
VAL [\old(counter)=0, a=5, b=3, c=5, counter=16, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L48] EXPR counter++
VAL [\old(counter)=0, a=5, b=3, c=5, counter=17, counter++=16, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L48] COND TRUE counter++<20
[L49] CALL __VERIFIER_assert(a == y * r + x * p)
VAL [\old(cond)=1, \old(counter)=0, counter=17]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17]
[L49] RET __VERIFIER_assert(a == y * r + x * p)
VAL [\old(counter)=0, a=5, b=3, c=5, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L50] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, \old(counter)=0, counter=17]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17]
[L50] RET __VERIFIER_assert(b == x * q + y * s)
VAL [\old(counter)=0, a=5, b=3, c=5, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L51] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, \old(counter)=0, counter=17]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17]
[L51] RET __VERIFIER_assert(a == k * b + c)
VAL [\old(counter)=0, a=5, b=3, c=5, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L52] CALL __VERIFIER_assert(v == b * d)
VAL [\old(cond)=1, \old(counter)=0, counter=17]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17]
[L52] RET __VERIFIER_assert(v == b * d)
VAL [\old(counter)=0, a=5, b=3, c=5, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L54] COND TRUE !(c >= 2 * v)
VAL [\old(counter)=0, a=5, b=3, c=5, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L59] c = c - v
[L60] k = k + d
VAL [\old(counter)=0, a=5, b=3, c=2, counter=17, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=5, b=3, c=2, counter=18, counter++=17, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND TRUE !(c >= b)
VAL [\old(counter)=0, a=5, b=3, c=2, counter=18, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=3, x=13, y=21]
[L63] a = b
[L64] b = c
[L65] long long temp;
[L66] temp = p
[L67] p = q
[L68] q = temp - q * k
[L69] temp = r
[L70] r = s
[L71] s = temp - s * k
VAL [\old(counter)=0, a=3, b=2, c=2, counter=18, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=3, x=13, y=21]
[L34] EXPR counter++
VAL [\old(counter)=0, a=3, b=2, c=2, counter=19, counter++=18, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=3, x=13, y=21]
[L34] COND TRUE counter++<20
[L35] COND FALSE !(!(b != 0))
[L37] long long c, k;
[L38] c = a
[L39] k = 0
VAL [\old(counter)=0, a=3, b=2, c=3, counter=19, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=3, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=3, b=2, c=3, counter=20, counter++=19, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=3, x=13, y=21]
[L41] COND TRUE counter++<20
[L42] COND FALSE !(!(c >= b))
[L44] long long d, v;
[L45] d = 1
[L46] v = b
VAL [\old(counter)=0, a=3, b=2, c=3, counter=20, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=2, x=13, y=21]
[L48] EXPR counter++
VAL [\old(counter)=0, a=3, b=2, c=3, counter=21, counter++=20, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=2, x=13, y=21]
[L48] COND FALSE !(counter++<20)
[L59] c = c - v
[L60] k = k + d
VAL [\old(counter)=0, a=3, b=2, c=1, counter=21, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=2, x=13, y=21]
[L41] EXPR counter++
VAL [\old(counter)=0, a=3, b=2, c=1, counter=22, counter++=21, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=2, x=13, y=21]
[L41] COND FALSE !(counter++<20)
[L63] a = b
[L64] b = c
[L65] long long temp;
[L66] temp = p
[L67] p = q
[L68] q = temp - q * k
[L69] temp = r
[L70] r = s
[L71] s = temp - s * k
VAL [\old(counter)=0, a=2, b=1, c=1, counter=22, d=1, k=1, p=5, q=-8, r=-3, s=5, temp=2, v=2, x=13, y=21]
[L34] EXPR counter++
VAL [\old(counter)=0, a=2, b=1, c=1, counter=23, counter++=22, d=1, k=1, p=5, q=-8, r=-3, s=5, temp=2, v=2, x=13, y=21]
[L34] COND FALSE !(counter++<20)
[L73] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a)
VAL [\old(cond)=0, \old(counter)=0, counter=23]
[L11] COND TRUE !(cond)
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=23]
[L13] reach_error()
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=23]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 163.8s, OverallIterations: 30, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 126.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 mSolverCounterUnknown, 4811 SdHoareTripleChecker+Valid, 67.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4734 mSDsluCounter, 11375 SdHoareTripleChecker+Invalid, 66.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9498 mSDsCounter, 3634 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8277 IncrementalHoareTripleChecker+Invalid, 11924 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3634 mSolverCounterUnsat, 1877 mSDtfsCounter, 8277 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3535 GetRequests, 2928 SyntacticMatches, 21 SemanticMatches, 586 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6144 ImplicationChecksByTransitivity, 51.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7412occurred in iteration=29, InterpolantAutomatonStates: 524, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.8s AutomataMinimizationTime, 29 MinimizatonAttempts, 5317 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 2001 NumberOfCodeBlocks, 1926 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 3202 ConstructedInterpolants, 0 QuantifiedInterpolants, 16550 SizeOfPredicates, 164 NumberOfNonLiveVariables, 5700 ConjunctsInSsa, 667 ConjunctsInUnsatCore, 47 InterpolantComputations, 12 PerfectInterpolantSequences, 5946/7207 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!
[2022-03-17 21:32:44,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...