/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s3iff.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 06:51:51,610 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 06:51:51,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 06:51:51,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 06:51:51,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 06:51:51,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 06:51:51,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 06:51:51,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 06:51:51,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 06:51:51,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 06:51:51,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 06:51:51,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 06:51:51,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 06:51:51,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 06:51:51,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 06:51:51,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 06:51:51,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 06:51:51,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 06:51:51,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 06:51:51,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 06:51:51,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 06:51:51,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 06:51:51,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 06:51:51,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 06:51:51,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 06:51:51,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 06:51:51,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 06:51:51,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 06:51:51,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 06:51:51,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 06:51:51,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 06:51:51,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 06:51:51,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 06:51:51,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 06:51:51,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 06:51:51,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 06:51:51,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 06:51:51,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 06:51:51,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 06:51:51,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 06:51:51,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 06:51:51,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-25 06:51:51,748 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 06:51:51,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 06:51:51,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 06:51:51,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 06:51:51,750 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 06:51:51,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 06:51:51,751 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 06:51:51,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 06:51:51,751 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 06:51:51,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 06:51:51,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 06:51:51,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 06:51:51,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 06:51:51,752 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 06:51:51,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 06:51:51,752 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 06:51:51,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 06:51:51,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 06:51:51,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 06:51:51,753 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 06:51:51,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 06:51:51,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 06:51:51,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 06:51:51,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 06:51:51,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 06:51:51,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 06:51:51,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 06:51:51,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 06:51:51,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 06:51:51,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;
[2020-09-25 06:51:52,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 06:51:52,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 06:51:52,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 06:51:52,235 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 06:51:52,235 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 06:51:52,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c
[2020-09-25 06:51:52,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6040ddaad/0ff2fa38cede43fbac442ad05ca80cb4/FLAG21d5f959c
[2020-09-25 06:51:52,860 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 06:51:52,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c
[2020-09-25 06:51:52,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6040ddaad/0ff2fa38cede43fbac442ad05ca80cb4/FLAG21d5f959c
[2020-09-25 06:51:53,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6040ddaad/0ff2fa38cede43fbac442ad05ca80cb4
[2020-09-25 06:51:53,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 06:51:53,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 06:51:53,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 06:51:53,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 06:51:53,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 06:51:53,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53, skipping insertion in model container
[2020-09-25 06:51:53,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 06:51:53,281 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 06:51:53,509 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:51:53,518 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 06:51:53,541 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:51:53,652 INFO L208 MainTranslator]: Completed translation
[2020-09-25 06:51:53,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53 WrapperNode
[2020-09-25 06:51:53,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 06:51:53,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 06:51:53,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 06:51:53,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 06:51:53,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
[2020-09-25 06:51:53,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 06:51:53,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 06:51:53,717 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 06:51:53,717 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 06:51:53,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 06:51:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 06:51:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 06:51:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 06:51:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 06:51:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 06:51:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 06:51:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 06:51:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 06:51:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 06:51:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 06:51:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-25 06:51:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 06:51:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 06:51:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-25 06:51:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 06:51:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 06:51:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 06:51:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 06:51:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 06:51:54,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 06:51:54,137 INFO L295 CfgBuilder]: Removed 2 assume(true) statements.
[2020-09-25 06:51:54,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:51:54 BoogieIcfgContainer
[2020-09-25 06:51:54,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 06:51:54,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 06:51:54,144 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 06:51:54,147 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 06:51:54,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:51:53" (1/3) ...
[2020-09-25 06:51:54,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec26c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:51:54, skipping insertion in model container
[2020-09-25 06:51:54,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:53" (2/3) ...
[2020-09-25 06:51:54,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec26c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:51:54, skipping insertion in model container
[2020-09-25 06:51:54,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:51:54" (3/3) ...
[2020-09-25 06:51:54,151 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c
[2020-09-25 06:51:54,163 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 06:51:54,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 06:51:54,195 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 06:51:54,223 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 06:51:54,223 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 06:51:54,224 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 06:51:54,224 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 06:51:54,224 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 06:51:54,224 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 06:51:54,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 06:51:54,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 06:51:54,248 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states.
[2020-09-25 06:51:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-09-25 06:51:54,257 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:51:54,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 06:51:54,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:51:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:51:54,265 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times
[2020-09-25 06:51:54,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:51:54,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201497738]
[2020-09-25 06:51:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:51:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:51:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:54,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:51:54,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-09-25 06:51:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 06:51:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240
[2020-09-25 06:51:54,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:51:54,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:51:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:51:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34
[2020-09-25 06:51:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:51:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 06:51:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:51:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:51:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:54,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:51:54,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 06:51:54,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:51:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-25 06:51:54,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:51:54,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:51:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:51:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:51:54,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:51:54,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:51:54,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 06:51:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:51:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:54,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:51:54,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 06:51:54,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:51:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 06:51:54,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:51:54,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:51:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:51:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:51:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:51:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:51:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 06:51:54,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201497738]
[2020-09-25 06:51:54,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 06:51:54,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-25 06:51:54,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619548728]
[2020-09-25 06:51:54,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-25 06:51:54,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:51:54,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-25 06:51:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 06:51:54,913 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states.
[2020-09-25 06:51:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:51:55,062 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions.
[2020-09-25 06:51:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-25 06:51:55,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31
[2020-09-25 06:51:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:51:55,076 INFO L225 Difference]: With dead ends: 113
[2020-09-25 06:51:55,076 INFO L226 Difference]: Without dead ends: 53
[2020-09-25 06:51:55,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 06:51:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2020-09-25 06:51:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2020-09-25 06:51:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-09-25 06:51:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions.
[2020-09-25 06:51:55,132 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31
[2020-09-25 06:51:55,132 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:51:55,132 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions.
[2020-09-25 06:51:55,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-25 06:51:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions.
[2020-09-25 06:51:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-09-25 06:51:55,134 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:51:55,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 06:51:55,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 06:51:55,135 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:51:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:51:55,136 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times
[2020-09-25 06:51:55,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:51:55,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124208837]
[2020-09-25 06:51:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:51:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:51:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:51:55,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-09-25 06:51:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 06:51:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432
[2020-09-25 06:51:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:51:55,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:51:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 06:51:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 06:51:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-25 06:51:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:51:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:51:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:51:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:55,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:51:55,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 06:51:55,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:51:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 06:51:55,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:51:55,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:51:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:51:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:51:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:51:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:51:55,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 06:51:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:51:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:55,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:51:55,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 06:51:55,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:51:55,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 06:51:55,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:51:55,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:51:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 06:51:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:51:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 06:51:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:51:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 06:51:55,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124208837]
[2020-09-25 06:51:55,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 06:51:55,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 06:51:55,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813569142]
[2020-09-25 06:51:55,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 06:51:55,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:51:55,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 06:51:55,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 06:51:55,686 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states.
[2020-09-25 06:51:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:51:55,842 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions.
[2020-09-25 06:51:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 06:51:55,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31
[2020-09-25 06:51:55,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:51:55,844 INFO L225 Difference]: With dead ends: 80
[2020-09-25 06:51:55,844 INFO L226 Difference]: Without dead ends: 55
[2020-09-25 06:51:55,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-25 06:51:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-09-25 06:51:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2020-09-25 06:51:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-09-25 06:51:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions.
[2020-09-25 06:51:55,856 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31
[2020-09-25 06:51:55,856 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:51:55,856 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions.
[2020-09-25 06:51:55,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 06:51:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions.
[2020-09-25 06:51:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-09-25 06:51:55,858 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:51:55,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 06:51:55,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 06:51:55,859 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:51:55,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:51:55,860 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times
[2020-09-25 06:51:55,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:51:55,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211163934]
[2020-09-25 06:51:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:51:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:51:55,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:56,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:51:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:52:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:52:00,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:52:00,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-25 06:52:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10
[2020-09-25 06:52:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-25 06:52:00,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:52:00,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:52:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-09-25 06:52:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 06:52:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40
[2020-09-25 06:52:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:52:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:52:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:52:01,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:52:01,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:52:01,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 06:52:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:52:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 06:52:01,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:52:01,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:52:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:52:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:52:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:52:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:52:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 06:52:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:52:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:52:01,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:52:01,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 06:52:01,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:52:01,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 06:52:01,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:52:01,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:52:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 06:52:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:52:01,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 06:52:01,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:52:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 06:52:01,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211163934]
[2020-09-25 06:52:01,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 06:52:01,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-09-25 06:52:01,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951114415]
[2020-09-25 06:52:01,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-09-25 06:52:01,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:52:01,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-09-25 06:52:01,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380
[2020-09-25 06:52:01,588 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states.
[2020-09-25 06:52:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:52:02,795 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions.
[2020-09-25 06:52:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-09-25 06:52:02,798 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48
[2020-09-25 06:52:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:52:02,801 INFO L225 Difference]: With dead ends: 84
[2020-09-25 06:52:02,801 INFO L226 Difference]: Without dead ends: 78
[2020-09-25 06:52:02,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=307, Invalid=1253, Unknown=0, NotChecked=0, Total=1560
[2020-09-25 06:52:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2020-09-25 06:52:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67.
[2020-09-25 06:52:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2020-09-25 06:52:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions.
[2020-09-25 06:52:02,825 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48
[2020-09-25 06:52:02,828 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:52:02,829 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions.
[2020-09-25 06:52:02,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-09-25 06:52:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions.
[2020-09-25 06:52:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-09-25 06:52:02,831 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:52:02,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 06:52:02,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 06:52:02,833 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:52:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:52:02,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times
[2020-09-25 06:52:02,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:52:02,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958135602]
[2020-09-25 06:52:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:52:02,857 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2020-09-25 06:52:02,857 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2020-09-25 06:52:02,857 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 06:52:02,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 06:52:02,896 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-09-25 06:52:02,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:52:02 BoogieIcfgContainer
[2020-09-25 06:52:02,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 06:52:02,901 INFO L168 Benchmark]: Toolchain (without parser) took 9668.39 ms. Allocated memory was 147.3 MB in the beginning and 298.3 MB in the end (delta: 151.0 MB). Free memory was 103.5 MB in the beginning and 185.7 MB in the end (delta: -82.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB.
[2020-09-25 06:52:02,903 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 06:52:02,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.17 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 183.3 MB in the end (delta: -80.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
[2020-09-25 06:52:02,906 INFO L168 Benchmark]: Boogie Preprocessor took 62.86 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
[2020-09-25 06:52:02,907 INFO L168 Benchmark]: RCFGBuilder took 425.99 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 161.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
[2020-09-25 06:52:02,913 INFO L168 Benchmark]: TraceAbstraction took 8753.62 ms. Allocated memory was 204.5 MB in the beginning and 298.3 MB in the end (delta: 93.8 MB). Free memory was 160.9 MB in the beginning and 185.7 MB in the end (delta: -24.8 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB.
[2020-09-25 06:52:02,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 416.17 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 183.3 MB in the end (delta: -80.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 62.86 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 425.99 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 161.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 8753.62 ms. Allocated memory was 204.5 MB in the beginning and 298.3 MB in the end (delta: 93.8 MB). Free memory was 160.9 MB in the beginning and 185.7 MB in the end (delta: -24.8 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L17] int N;
[L21] N = __VERIFIER_nondet_int()
[L22] COND FALSE !(N <= 0)
[L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L11] COND FALSE !(!cond)
[L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L25] int i;
[L26] long long sum[1];
[L27] int *a = malloc(sizeof(int)*N);
[L29] sum[0] = 1
[L30] i=0
[L30] COND TRUE i<N
[L32] a[i] = 3
[L30] i++
[L30] COND FALSE !(i<N)
[L35] i=0
[L35] COND TRUE i<N
[L37] EXPR a[i]
[L37] COND FALSE !(a[i] == 3)
[L40] EXPR sum[0]
[L40] EXPR a[i]
[L40] sum[0] = sum[0] * a[i]
[L35] i++
[L35] COND FALSE !(i<N)
[L44] EXPR sum[0]
[L44] CALL __VERIFIER_assert(sum[0] == 4*N)
[L13] COND TRUE !(cond)
[L13] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 145 SDtfs, 371 SDslu, 202 SDs, 0 SdLazy, 505 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=3, 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, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 33119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...