/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/egcd2-ll_unwindbound1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-34549b5
[2022-04-06 11:42:29,598 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-04-06 11:42:29,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-06 11:42:29,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-06 11:42:29,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-06 11:42:29,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-06 11:42:29,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-06 11:42:29,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-06 11:42:29,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-06 11:42:29,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-06 11:42:29,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-04-06 11:42:29,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-06 11:42:29,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-06 11:42:29,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-06 11:42:29,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-06 11:42:29,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-06 11:42:29,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-06 11:42:29,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-06 11:42:29,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-06 11:42:29,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-06 11:42:29,651 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-06 11:42:29,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-06 11:42:29,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-06 11:42:29,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-04-06 11:42:29,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-06 11:42:29,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-06 11:42:29,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-06 11:42:29,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-06 11:42:29,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-06 11:42:29,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-06 11:42:29,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-06 11:42:29,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-06 11:42:29,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-06 11:42:29,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-06 11:42:29,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-06 11:42:29,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-06 11:42:29,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-06 11:42:29,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-06 11:42:29,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-06 11:42:29,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-04-06 11:42:29,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-04-06 11:42:29,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-04-06 11:42:29,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf
[2022-04-06 11:42:29,676 INFO L113 SettingsManager]: Loading preferences was successful
[2022-04-06 11:42:29,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-06 11:42:29,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-04-06 11:42:29,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-04-06 11:42:29,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-04-06 11:42:29,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-04-06 11:42:29,677 INFO L138 SettingsManager]: * Use SBE=true
[2022-04-06 11:42:29,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-06 11:42:29,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-04-06 11:42:29,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-04-06 11:42:29,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-04-06 11:42:29,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-04-06 11:42:29,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 11:42:29,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-06 11:42:29,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-04-06 11:42:29,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-04-06 11:42:29,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-04-06 11:42:29,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-04-06 11:42:29,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-04-06 11:42:29,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2022-04-06 11:42:29,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-04-06 11:42:29,680 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-04-06 11:42:29,680 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-04-06 11:42:29,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-06 11:42:29,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-06 11:42:29,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-06 11:42:29,830 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-04-06 11:42:29,831 INFO L275 PluginConnector]: CDTParser initialized
[2022-04-06 11:42:29,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound1.c
[2022-04-06 11:42:29,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485647102/238f357b9c2a4fb1b4189ef96325c3a4/FLAG118705971
[2022-04-06 11:42:30,179 INFO L306 CDTParser]: Found 1 translation units.
[2022-04-06 11:42:30,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound1.c
[2022-04-06 11:42:30,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485647102/238f357b9c2a4fb1b4189ef96325c3a4/FLAG118705971
[2022-04-06 11:42:30,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485647102/238f357b9c2a4fb1b4189ef96325c3a4
[2022-04-06 11:42:30,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-06 11:42:30,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-04-06 11:42:30,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-06 11:42:30,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-06 11:42:30,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-06 11:42:30,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fd25e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30, skipping insertion in model container
[2022-04-06 11:42:30,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-04-06 11:42:30,629 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-04-06 11:42:30,740 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/egcd2-ll_unwindbound1.c[490,503]
[2022-04-06 11:42:30,753 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 11:42:30,757 INFO L203 MainTranslator]: Completed pre-run
[2022-04-06 11:42:30,764 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/egcd2-ll_unwindbound1.c[490,503]
[2022-04-06 11:42:30,770 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 11:42:30,777 INFO L208 MainTranslator]: Completed translation
[2022-04-06 11:42:30,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30 WrapperNode
[2022-04-06 11:42:30,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-06 11:42:30,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-06 11:42:30,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-06 11:42:30,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-04-06 11:42:30,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-06 11:42:30,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-06 11:42:30,796 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-04-06 11:42:30,796 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-04-06 11:42:30,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (1/1) ...
[2022-04-06 11:42:30,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 11:42:30,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 11:42:30,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-04-06 11:42:30,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-04-06 11:42:30,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-04-06 11:42:30,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-06 11:42:30,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-04-06 11:42:30,839 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-04-06 11:42:30,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-04-06 11:42:30,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-04-06 11:42:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-04-06 11:42:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-06 11:42:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-06 11:42:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-04-06 11:42:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-04-06 11:42:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-06 11:42:30,883 INFO L234 CfgBuilder]: Building ICFG
[2022-04-06 11:42:30,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-06 11:42:30,982 INFO L275 CfgBuilder]: Performing block encoding
[2022-04-06 11:42:30,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-06 11:42:31,003 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2022-04-06 11:42:31,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:42:31 BoogieIcfgContainer
[2022-04-06 11:42:31,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-06 11:42:31,005 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-04-06 11:42:31,005 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-04-06 11:42:31,006 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-04-06 11:42:31,008 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:42:31" (1/1) ...
[2022-04-06 11:42:31,009 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR
[2022-04-06 11:42:31,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 11:42:31 BasicIcfg
[2022-04-06 11:42:31,036 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-04-06 11:42:31,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-06 11:42:31,037 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-04-06 11:42:31,039 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-04-06 11:42:31,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 11:42:30" (1/4) ...
[2022-04-06 11:42:31,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45407d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:42:31, skipping insertion in model container
[2022-04-06 11:42:31,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:30" (2/4) ...
[2022-04-06 11:42:31,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45407d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:42:31, skipping insertion in model container
[2022-04-06 11:42:31,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:42:31" (3/4) ...
[2022-04-06 11:42:31,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45407d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 11:42:31, skipping insertion in model container
[2022-04-06 11:42:31,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 11:42:31" (4/4) ...
[2022-04-06 11:42:31,041 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound1.cqvasr
[2022-04-06 11:42:31,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-04-06 11:42:31,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-04-06 11:42:31,079 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-06 11:42:31,083 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-06 11:42:31,084 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-04-06 11:42:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-04-06 11:42:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-04-06 11:42:31,101 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 11:42:31,101 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 11:42:31,101 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 11:42:31,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 11:42:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash -282167495, now seen corresponding path program 1 times
[2022-04-06 11:42:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 11:42:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37541227]
[2022-04-06 11:42:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 11:42:31,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 11:42:31,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672165167]
[2022-04-06 11:42:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:31,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:31,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 11:42:31,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 11:42:31,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-04-06 11:42:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 11:42:31,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-04-06 11:42:31,302 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 11:42:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-04-06 11:42:31,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 11:42:31,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 11:42:31,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37541227]
[2022-04-06 11:42:31,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 11:42:31,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672165167]
[2022-04-06 11:42:31,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672165167] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 11:42:31,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 11:42:31,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-06 11:42:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124519754]
[2022-04-06 11:42:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 11:42:31,386 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-04-06 11:42:31,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 11:42:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-04-06 11:42:31,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-06 11:42:31,412 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2022-04-06 11:42:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 11:42:31,435 INFO L93 Difference]: Finished difference Result 71 states and 110 transitions.
[2022-04-06 11:42:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-04-06 11:42:31,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32
[2022-04-06 11:42:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 11:42:31,442 INFO L225 Difference]: With dead ends: 71
[2022-04-06 11:42:31,442 INFO L226 Difference]: Without dead ends: 34
[2022-04-06 11:42:31,445 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-06 11:42:31,451 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 11:42:31,453 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 11:42:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-04-06 11:42:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2022-04-06 11:42:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-04-06 11:42:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions.
[2022-04-06 11:42:31,486 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 32
[2022-04-06 11:42:31,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 11:42:31,488 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions.
[2022-04-06 11:42:31,488 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2022-04-06 11:42:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions.
[2022-04-06 11:42:31,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-04-06 11:42:31,491 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 11:42:31,491 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 11:42:31,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-04-06 11:42:31,708 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2022-04-06 11:42:31,708 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 11:42:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 11:42:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash -127828113, now seen corresponding path program 1 times
[2022-04-06 11:42:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 11:42:31,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053463918]
[2022-04-06 11:42:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 11:42:31,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 11:42:31,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832121302]
[2022-04-06 11:42:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:31,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:31,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 11:42:31,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 11:42:31,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-04-06 11:42:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 11:42:31,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-04-06 11:42:31,778 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 11:42:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-04-06 11:42:31,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 11:42:31,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 11:42:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053463918]
[2022-04-06 11:42:31,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 11:42:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832121302]
[2022-04-06 11:42:31,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832121302] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 11:42:31,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 11:42:31,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 11:42:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394946663]
[2022-04-06 11:42:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 11:42:31,900 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-04-06 11:42:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 11:42:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-04-06 11:42:31,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 11:42:31,901 INFO L87 Difference]: Start difference. First operand 34 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-06 11:42:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 11:42:31,923 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions.
[2022-04-06 11:42:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-04-06 11:42:31,924 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33
[2022-04-06 11:42:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 11:42:31,925 INFO L225 Difference]: With dead ends: 44
[2022-04-06 11:42:31,925 INFO L226 Difference]: Without dead ends: 36
[2022-04-06 11:42:31,926 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 11:42:31,928 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 11:42:31,928 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 11:42:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-04-06 11:42:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2022-04-06 11:42:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-04-06 11:42:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions.
[2022-04-06 11:42:31,940 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 33
[2022-04-06 11:42:31,940 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 11:42:31,940 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions.
[2022-04-06 11:42:31,941 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-06 11:42:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions.
[2022-04-06 11:42:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-04-06 11:42:31,941 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 11:42:31,941 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 11:42:31,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-04-06 11:42:32,151 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2022-04-06 11:42:32,152 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 11:42:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 11:42:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash 365419517, now seen corresponding path program 1 times
[2022-04-06 11:42:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 11:42:32,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093086038]
[2022-04-06 11:42:32,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:32,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 11:42:32,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 11:42:32,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339390355]
[2022-04-06 11:42:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:32,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:32,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 11:42:32,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 11:42:32,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-04-06 11:42:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 11:42:32,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-04-06 11:42:32,203 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 11:42:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-04-06 11:42:32,263 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 11:42:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-04-06 11:42:32,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 11:42:32,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093086038]
[2022-04-06 11:42:32,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 11:42:32,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339390355]
[2022-04-06 11:42:32,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339390355] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 11:42:32,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-04-06 11:42:32,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2022-04-06 11:42:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697326894]
[2022-04-06 11:42:32,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-04-06 11:42:32,358 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-04-06 11:42:32,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 11:42:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-04-06 11:42:32,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-04-06 11:42:32,359 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-06 11:42:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 11:42:32,432 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions.
[2022-04-06 11:42:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-04-06 11:42:32,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34
[2022-04-06 11:42:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 11:42:32,433 INFO L225 Difference]: With dead ends: 53
[2022-04-06 11:42:32,433 INFO L226 Difference]: Without dead ends: 45
[2022-04-06 11:42:32,433 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-04-06 11:42:32,434 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-06 11:42:32,434 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 162 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-06 11:42:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2022-04-06 11:42:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37.
[2022-04-06 11:42:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-04-06 11:42:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions.
[2022-04-06 11:42:32,439 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 34
[2022-04-06 11:42:32,439 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 11:42:32,439 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions.
[2022-04-06 11:42:32,439 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-06 11:42:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions.
[2022-04-06 11:42:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-04-06 11:42:32,440 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 11:42:32,440 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 11:42:32,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-04-06 11:42:32,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:32,655 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 11:42:32,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 11:42:32,656 INFO L85 PathProgramCache]: Analyzing trace with hash 196514290, now seen corresponding path program 1 times
[2022-04-06 11:42:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 11:42:32,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026114101]
[2022-04-06 11:42:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 11:42:32,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 11:42:32,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189233210]
[2022-04-06 11:42:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:32,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 11:42:32,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 11:42:32,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-04-06 11:42:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 11:42:32,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-04-06 11:42:32,710 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 11:42:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-04-06 11:42:32,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 11:42:32,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 11:42:32,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026114101]
[2022-04-06 11:42:32,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-06 11:42:32,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189233210]
[2022-04-06 11:42:32,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189233210] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 11:42:32,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 11:42:32,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-04-06 11:42:32,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279666571]
[2022-04-06 11:42:32,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 11:42:32,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-04-06 11:42:32,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-06 11:42:32,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-04-06 11:42:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-04-06 11:42:32,771 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-06 11:42:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 11:42:32,799 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions.
[2022-04-06 11:42:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-04-06 11:42:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36
[2022-04-06 11:42:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 11:42:32,800 INFO L225 Difference]: With dead ends: 51
[2022-04-06 11:42:32,800 INFO L226 Difference]: Without dead ends: 32
[2022-04-06 11:42:32,800 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2022-04-06 11:42:32,803 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 11:42:32,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 11:42:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-04-06 11:42:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-04-06 11:42:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-04-06 11:42:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions.
[2022-04-06 11:42:32,806 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 36
[2022-04-06 11:42:32,807 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 11:42:32,807 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions.
[2022-04-06 11:42:32,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-06 11:42:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions.
[2022-04-06 11:42:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-04-06 11:42:32,807 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 11:42:32,808 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 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]
[2022-04-06 11:42:32,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-04-06 11:42:33,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:33,024 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 11:42:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 11:42:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 56558454, now seen corresponding path program 1 times
[2022-04-06 11:42:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 11:42:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641683162]
[2022-04-06 11:42:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 11:42:33,035 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-06 11:42:33,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951902583]
[2022-04-06 11:42:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 11:42:33,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:33,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 11:42:33,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-06 11:42:33,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-04-06 11:42:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-06 11:42:33,074 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-04-06 11:42:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-06 11:42:33,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-04-06 11:42:33,114 INFO L618 BasicCegarLoop]: Counterexample is feasible
[2022-04-06 11:42:33,115 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-04-06 11:42:33,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-04-06 11:42:33,333 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 11:42:33,336 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2022-04-06 11:42:33,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-04-06 11:42:33,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 11:42:33 BasicIcfg
[2022-04-06 11:42:33,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-04-06 11:42:33,371 INFO L158 Benchmark]: Toolchain (without parser) took 2764.53ms. Allocated memory was 170.9MB in the beginning and 209.7MB in the end (delta: 38.8MB). Free memory was 120.1MB in the beginning and 150.5MB in the end (delta: -30.4MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB.
[2022-04-06 11:42:33,371 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 170.9MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 8.0GB.
[2022-04-06 11:42:33,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.76ms. Allocated memory is still 170.9MB. Free memory was 119.8MB in the beginning and 146.7MB in the end (delta: -26.9MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB.
[2022-04-06 11:42:33,371 INFO L158 Benchmark]: Boogie Preprocessor took 17.40ms. Allocated memory is still 170.9MB. Free memory was 146.7MB in the beginning and 145.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-04-06 11:42:33,372 INFO L158 Benchmark]: RCFGBuilder took 208.47ms. Allocated memory is still 170.9MB. Free memory was 144.8MB in the beginning and 133.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-04-06 11:42:33,372 INFO L158 Benchmark]: IcfgTransformer took 30.61ms. Allocated memory is still 170.9MB. Free memory was 133.3MB in the beginning and 131.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-04-06 11:42:33,372 INFO L158 Benchmark]: TraceAbstraction took 2333.49ms. Allocated memory was 170.9MB in the beginning and 209.7MB in the end (delta: 38.8MB). Free memory was 131.2MB in the beginning and 150.5MB in the end (delta: -19.3MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB.
[2022-04-06 11:42:33,373 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 170.9MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 168.76ms. Allocated memory is still 170.9MB. Free memory was 119.8MB in the beginning and 146.7MB in the end (delta: -26.9MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 17.40ms. Allocated memory is still 170.9MB. Free memory was 146.7MB in the beginning and 145.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 208.47ms. Allocated memory is still 170.9MB. Free memory was 144.8MB in the beginning and 133.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 30.61ms. Allocated memory is still 170.9MB. Free memory was 133.3MB in the beginning and 131.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* TraceAbstraction took 2333.49ms. Allocated memory was 170.9MB in the beginning and 209.7MB in the end (delta: 38.8MB). Free memory was 131.2MB in the beginning and 150.5MB in the end (delta: -19.3MB). Peak memory consumption was 20.9MB. 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)=6, counter=0]
[L20] int x, y;
[L21] long long a, b, p, q, r, s, c, k, xy, yy;
[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=1, y=1]
[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=1, y=1]
[L27] a = x
[L28] b = y
[L29] p = 1
[L30] q = 0
[L31] r = 0
[L32] s = 1
[L33] c = 0
[L34] k = 0
[L35] xy = (long long) x * y
[L36] yy = (long long) y * y
VAL [\old(counter)=0, a=1, b=1, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1]
[L37] CALL assume_abort_if_not(xy < 2147483647)
VAL [\old(cond)=1, \old(counter)=0, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0]
[L37] RET assume_abort_if_not(xy < 2147483647)
VAL [\old(counter)=0, a=1, b=1, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1]
[L38] CALL assume_abort_if_not(yy < 2147483647)
VAL [\old(cond)=1, \old(counter)=0, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0]
[L38] RET assume_abort_if_not(yy < 2147483647)
VAL [\old(counter)=0, a=1, b=1, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1]
[L40] EXPR counter++
VAL [\old(counter)=0, a=1, b=1, c=0, counter=1, counter++=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1]
[L40] COND TRUE counter++<1
[L41] COND FALSE !(!(b != 0))
[L43] c = a
[L44] k = 0
VAL [\old(counter)=0, a=1, b=1, c=1, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1]
[L46] EXPR counter++
VAL [\old(counter)=0, a=1, b=1, c=1, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1]
[L46] COND FALSE !(counter++<1)
[L57] a = b
[L58] b = c
[L60] long long temp;
[L61] temp = p
[L62] p = q
[L63] q = temp - q * k
[L64] temp = r
[L65] r = s
[L66] s = temp - s * k
VAL [\old(counter)=0, a=1, b=1, c=1, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, xy=1, y=1, yy=1]
[L40] EXPR counter++
VAL [\old(counter)=0, a=1, b=1, c=1, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, xy=1, y=1, yy=1]
[L40] COND FALSE !(counter++<1)
[L70] CALL __VERIFIER_assert(q*x + s*y == 0)
VAL [\old(cond)=0, \old(counter)=0, counter=3]
[L11] COND TRUE !(cond)
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3]
[L13] reach_error()
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 228 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 163 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 323 SizeOfPredicates, 5 NumberOfNonLiveVariables, 508 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 108/120 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2022-04-06 11:42:33,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...