/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/loop-zilu/benchmark20_conjunctive.i


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-7968f31
[2022-03-17 20:18:51,601 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-03-17 20:18:51,602 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-03-17 20:18:51,638 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-03-17 20:18:51,638 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-03-17 20:18:51,639 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-03-17 20:18:51,643 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-03-17 20:18:51,644 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-03-17 20:18:51,645 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-03-17 20:18:51,645 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-03-17 20:18:51,646 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-03-17 20:18:51,646 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-03-17 20:18:51,647 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-03-17 20:18:51,647 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-03-17 20:18:51,648 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-03-17 20:18:51,649 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-03-17 20:18:51,649 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-03-17 20:18:51,650 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-03-17 20:18:51,651 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-03-17 20:18:51,652 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-03-17 20:18:51,653 INFO  L181        SettingsManager]: Resetting HornVerifier preferences to default values
[2022-03-17 20:18:51,654 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-03-17 20:18:51,654 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-03-17 20:18:51,655 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-03-17 20:18:51,656 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-03-17 20:18:51,657 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-03-17 20:18:51,658 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-03-17 20:18:51,658 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-03-17 20:18:51,658 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-03-17 20:18:51,658 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-03-17 20:18:51,659 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-03-17 20:18:51,659 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-03-17 20:18:51,660 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-03-17 20:18:51,660 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-03-17 20:18:51,661 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-03-17 20:18:51,661 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-03-17 20:18:51,661 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-03-17 20:18:51,662 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-03-17 20:18:51,662 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-03-17 20:18:51,662 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-03-17 20:18:51,663 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-03-17 20:18:51,665 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-03-17 20:18:51,666 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 20:18:51,680 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-03-17 20:18:51,680 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-03-17 20:18:51,681 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-03-17 20:18:51,681 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-03-17 20:18:51,681 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-03-17 20:18:51,681 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-03-17 20:18:51,681 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-03-17 20:18:51,681 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-03-17 20:18:51,682 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-03-17 20:18:51,682 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-17 20:18:51,683 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-03-17 20:18:51,683 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-03-17 20:18:51,683 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-03-17 20:18:51,683 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-03-17 20:18:51,683 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-03-17 20:18:51,683 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-03-17 20:18:51,683 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-03-17 20:18:51,683 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-03-17 20:18:51,684 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-03-17 20:18:51,684 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-03-17 20:18:51,848 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-03-17 20:18:51,869 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-03-17 20:18:51,871 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-03-17 20:18:51,872 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-03-17 20:18:51,872 INFO  L275        PluginConnector]: CDTParser initialized
[2022-03-17 20:18:51,873 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i
[2022-03-17 20:18:51,940 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edadf089d/feb40f5184a94017a886a5bea2ee0490/FLAGbe61dec15
[2022-03-17 20:18:52,313 INFO  L306              CDTParser]: Found 1 translation units.
[2022-03-17 20:18:52,313 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i
[2022-03-17 20:18:52,317 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edadf089d/feb40f5184a94017a886a5bea2ee0490/FLAGbe61dec15
[2022-03-17 20:18:52,325 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edadf089d/feb40f5184a94017a886a5bea2ee0490
[2022-03-17 20:18:52,327 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-03-17 20:18:52,328 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-03-17 20:18:52,330 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-03-17 20:18:52,330 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-03-17 20:18:52,335 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-03-17 20:18:52,336 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,336 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53cdd6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52, skipping insertion in model container
[2022-03-17 20:18:52,337 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,341 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-03-17 20:18:52,352 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-03-17 20:18:52,485 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i[873,886]
[2022-03-17 20:18:52,500 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-03-17 20:18:52,506 INFO  L203         MainTranslator]: Completed pre-run
[2022-03-17 20:18:52,552 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i[873,886]
[2022-03-17 20:18:52,555 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-03-17 20:18:52,566 INFO  L208         MainTranslator]: Completed translation
[2022-03-17 20:18:52,566 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52 WrapperNode
[2022-03-17 20:18:52,566 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-03-17 20:18:52,567 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-03-17 20:18:52,567 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-03-17 20:18:52,568 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-03-17 20:18:52,574 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,574 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,578 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,579 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,581 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,584 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,585 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,586 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-03-17 20:18:52,587 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-03-17 20:18:52,587 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-03-17 20:18:52,587 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-03-17 20:18:52,588 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:52,594 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-17 20:18:52,600 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-17 20:18:52,610 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 20:18:52,618 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 20:18:52,642 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-03-17 20:18:52,642 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-03-17 20:18:52,642 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2022-03-17 20:18:52,642 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-03-17 20:18:52,643 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2022-03-17 20:18:52,643 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-03-17 20:18:52,643 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-03-17 20:18:52,644 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2022-03-17 20:18:52,644 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2022-03-17 20:18:52,644 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-03-17 20:18:52,644 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-03-17 20:18:52,645 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2022-03-17 20:18:52,645 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-03-17 20:18:52,645 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2022-03-17 20:18:52,646 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-03-17 20:18:52,646 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-03-17 20:18:52,646 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-03-17 20:18:52,646 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-03-17 20:18:52,646 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-03-17 20:18:52,646 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-03-17 20:18:52,692 INFO  L234             CfgBuilder]: Building ICFG
[2022-03-17 20:18:52,693 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-03-17 20:18:52,770 INFO  L275             CfgBuilder]: Performing block encoding
[2022-03-17 20:18:52,774 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-03-17 20:18:52,774 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-03-17 20:18:52,775 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:18:52 BoogieIcfgContainer
[2022-03-17 20:18:52,776 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-03-17 20:18:52,776 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-03-17 20:18:52,776 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-03-17 20:18:52,777 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-03-17 20:18:52,779 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:18:52" (1/1) ...
[2022-03-17 20:18:53,094 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 08:18:53 BasicIcfg
[2022-03-17 20:18:53,094 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-03-17 20:18:53,095 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-03-17 20:18:53,095 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-03-17 20:18:53,097 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-03-17 20:18:53,097 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 08:18:52" (1/4) ...
[2022-03-17 20:18:53,098 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53424f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:18:53, skipping insertion in model container
[2022-03-17 20:18:53,098 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (2/4) ...
[2022-03-17 20:18:53,098 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53424f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:18:53, skipping insertion in model container
[2022-03-17 20:18:53,098 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:18:52" (3/4) ...
[2022-03-17 20:18:53,099 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53424f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 08:18:53, skipping insertion in model container
[2022-03-17 20:18:53,099 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 08:18:53" (4/4) ...
[2022-03-17 20:18:53,100 INFO  L111   eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.iqvasr
[2022-03-17 20:18:53,103 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-03-17 20:18:53,103 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-03-17 20:18:53,134 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-03-17 20:18:53,138 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 20:18:53,139 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-03-17 20:18:53,149 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-03-17 20:18:53,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-03-17 20:18:53,152 INFO  L492         BasicCegarLoop]: Found error trace
[2022-03-17 20:18:53,152 INFO  L500         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 20:18:53,153 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 20:18:53,156 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 20:18:53,156 INFO  L85        PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times
[2022-03-17 20:18:53,162 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 20:18:53,163 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464703898]
[2022-03-17 20:18:53,163 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 20:18:53,163 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 20:18:53,227 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 20:18:53,259 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-03-17 20:18:53,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 20:18:53,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-17 20:18:53,267 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 20:18:53,268 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464703898]
[2022-03-17 20:18:53,268 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464703898] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 20:18:53,268 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 20:18:53,268 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-03-17 20:18:53,269 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928974959]
[2022-03-17 20:18:53,270 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 20:18:53,273 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-03-17 20:18:53,273 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 20:18:53,296 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-03-17 20:18:53,297 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-17 20:18:53,299 INFO  L87              Difference]: Start difference. First operand  has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-17 20:18:53,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 20:18:53,329 INFO  L93              Difference]: Finished difference Result 32 states and 36 transitions.
[2022-03-17 20:18:53,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-17 20:18:53,333 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-03-17 20:18:53,334 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 20:18:53,341 INFO  L225             Difference]: With dead ends: 32
[2022-03-17 20:18:53,342 INFO  L226             Difference]: Without dead ends: 13
[2022-03-17 20:18:53,345 INFO  L911         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 20:18:53,351 INFO  L912         BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 20:18:53,352 INFO  L913         BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 20:18:53,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2022-03-17 20:18:53,375 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2022-03-17 20:18:53,375 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-17 20:18:53,376 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2022-03-17 20:18:53,377 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12
[2022-03-17 20:18:53,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-03-17 20:18:53,378 INFO  L478      AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2022-03-17 20:18:53,378 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-17 20:18:53,379 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2022-03-17 20:18:53,379 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-03-17 20:18:53,379 INFO  L492         BasicCegarLoop]: Found error trace
[2022-03-17 20:18:53,379 INFO  L500         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 20:18:53,380 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-03-17 20:18:53,380 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 20:18:53,384 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 20:18:53,384 INFO  L85        PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times
[2022-03-17 20:18:53,384 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 20:18:53,384 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993002602]
[2022-03-17 20:18:53,384 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 20:18:53,384 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 20:18:53,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 20:18:53,457 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-03-17 20:18:53,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-17 20:18:53,475 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-17 20:18:53,476 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-17 20:18:53,476 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993002602]
[2022-03-17 20:18:53,476 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993002602] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-17 20:18:53,476 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-17 20:18:53,476 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-17 20:18:53,476 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845287819]
[2022-03-17 20:18:53,477 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-17 20:18:53,477 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-03-17 20:18:53,478 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-17 20:18:53,478 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-03-17 20:18:53,478 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-03-17 20:18:53,478 INFO  L87              Difference]: Start difference. First operand 13 states and 13 transitions. Second operand  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-17 20:18:53,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-03-17 20:18:53,530 INFO  L93              Difference]: Finished difference Result 19 states and 19 transitions.
[2022-03-17 20:18:53,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-03-17 20:18:53,531 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-03-17 20:18:53,531 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-03-17 20:18:53,532 INFO  L225             Difference]: With dead ends: 19
[2022-03-17 20:18:53,532 INFO  L226             Difference]: Without dead ends: 14
[2022-03-17 20:18:53,535 INFO  L911         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2022-03-17 20:18:53,536 INFO  L912         BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-03-17 20:18:53,536 INFO  L913         BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-03-17 20:18:53,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-03-17 20:18:53,539 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-03-17 20:18:53,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-17 20:18:53,539 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2022-03-17 20:18:53,539 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12
[2022-03-17 20:18:53,540 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-03-17 20:18:53,540 INFO  L478      AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2022-03-17 20:18:53,540 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-03-17 20:18:53,540 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2022-03-17 20:18:53,540 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-03-17 20:18:53,540 INFO  L492         BasicCegarLoop]: Found error trace
[2022-03-17 20:18:53,540 INFO  L500         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-03-17 20:18:53,541 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-03-17 20:18:53,541 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-03-17 20:18:53,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-17 20:18:53,541 INFO  L85        PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times
[2022-03-17 20:18:53,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-17 20:18:53,541 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488423509]
[2022-03-17 20:18:53,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-17 20:18:53,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-17 20:18:53,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-03-17 20:18:53,553 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-03-17 20:18:53,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-03-17 20:18:53,574 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-03-17 20:18:53,575 INFO  L614         BasicCegarLoop]: Counterexample is feasible
[2022-03-17 20:18:53,575 INFO  L788   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-03-17 20:18:53,577 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-03-17 20:18:53,579 INFO  L718         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-03-17 20:18:53,581 INFO  L180   ceAbstractionStarter]: Computing trace abstraction results
[2022-03-17 20:18:53,593 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 08:18:53 BasicIcfg
[2022-03-17 20:18:53,593 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-03-17 20:18:53,594 INFO  L158              Benchmark]: Toolchain (without parser) took 1266.05ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 136.1MB in the beginning and 214.0MB in the end (delta: -77.9MB). Peak memory consumption was 25.8MB. Max. memory is 8.0GB.
[2022-03-17 20:18:53,594 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-03-17 20:18:53,594 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 236.27ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 136.0MB in the beginning and 269.6MB in the end (delta: -133.6MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB.
[2022-03-17 20:18:53,595 INFO  L158              Benchmark]: Boogie Preprocessor took 18.98ms. Allocated memory is still 296.7MB. Free memory was 269.6MB in the beginning and 268.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-03-17 20:18:53,595 INFO  L158              Benchmark]: RCFGBuilder took 189.02ms. Allocated memory is still 296.7MB. Free memory was 268.0MB in the beginning and 258.1MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
[2022-03-17 20:18:53,595 INFO  L158              Benchmark]: IcfgTransformer took 317.69ms. Allocated memory is still 296.7MB. Free memory was 258.1MB in the beginning and 248.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-03-17 20:18:53,596 INFO  L158              Benchmark]: TraceAbstraction took 498.52ms. Allocated memory is still 296.7MB. Free memory was 247.6MB in the beginning and 214.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB.
[2022-03-17 20:18:53,597 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 236.27ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 136.0MB in the beginning and 269.6MB in the end (delta: -133.6MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 18.98ms. Allocated memory is still 296.7MB. Free memory was 269.6MB in the beginning and 268.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 189.02ms. Allocated memory is still 296.7MB. Free memory was 268.0MB in the beginning and 258.1MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
 * IcfgTransformer took 317.69ms. Allocated memory is still 296.7MB. Free memory was 258.1MB in the beginning and 248.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 498.52ms. Allocated memory is still 296.7MB. Free memory was 247.6MB in the beginning and 214.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 16]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L20]              int i = __VERIFIER_nondet_int();
[L21]              int n = __VERIFIER_nondet_int();
[L22]              int sum = __VERIFIER_nondet_int();
[L23]  COND FALSE  !(!(i==0 && n>=0 && n<=100 && sum==0))
       VAL         [i=0, n=0, sum=0]
[L24]  COND TRUE   i<n
[L25]              sum = sum + i
[L26]              i++
       VAL         [i=0, n=0]
[L24]  COND FALSE  !(i<n)
       VAL         [i=0, n=0]
[L28]  CALL        __VERIFIER_assert(sum>=0)
       VAL         [\old(cond)=0]
[L15]  COND TRUE   !cond
       VAL         [\old(cond)=0, cond=0]
[L16]              reach_error()
       VAL         [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 30 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 20:18:53,631 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...