/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/ldv-regression/test08.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 06:40:16,799 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 06:40:16,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 06:40:16,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 06:40:16,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 06:40:16,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 06:40:16,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 06:40:16,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 06:40:16,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 06:40:16,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 06:40:16,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 06:40:16,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 06:40:16,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 06:40:16,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 06:40:16,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 06:40:16,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 06:40:16,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 06:40:16,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 06:40:16,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 06:40:16,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 06:40:16,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 06:40:16,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 06:40:16,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 06:40:16,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 06:40:16,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 06:40:16,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 06:40:16,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 06:40:16,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 06:40:16,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 06:40:16,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 06:40:16,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 06:40:16,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 06:40:16,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 06:40:16,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 06:40:16,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 06:40:16,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 06:40:16,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 06:40:16,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 06:40:16,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 06:40:16,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 06:40:16,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 06:40:16,926 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 06:40:16,971 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 06:40:16,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 06:40:16,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 06:40:16,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 06:40:16,974 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 06:40:16,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 06:40:16,975 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 06:40:16,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 06:40:16,975 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 06:40:16,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 06:40:16,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 06:40:16,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 06:40:16,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 06:40:16,978 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 06:40:16,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 06:40:16,978 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 06:40:16,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 06:40:16,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 06:40:16,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 06:40:16,979 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 06:40:16,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 06:40:16,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 06:40:16,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 06:40:16,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 06:40:16,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 06:40:16,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 06:40:16,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 06:40:16,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 06:40:16,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 06:40:16,981 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 06:40:17,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 06:40:17,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 06:40:17,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 06:40:17,487 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 06:40:17,488 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 06:40:17,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c
[2020-09-25 06:40:17,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16a00871/e808cbf681ca4d6aa5ecdb329e91e571/FLAG74af229f5
[2020-09-25 06:40:18,092 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 06:40:18,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test08.c
[2020-09-25 06:40:18,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16a00871/e808cbf681ca4d6aa5ecdb329e91e571/FLAG74af229f5
[2020-09-25 06:40:18,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16a00871/e808cbf681ca4d6aa5ecdb329e91e571
[2020-09-25 06:40:18,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 06:40:18,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 06:40:18,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 06:40:18,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 06:40:18,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 06:40:18,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ed318b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18, skipping insertion in model container
[2020-09-25 06:40:18,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 06:40:18,553 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 06:40:18,754 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:40:18,770 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 06:40:18,790 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:40:18,811 INFO L208 MainTranslator]: Completed translation
[2020-09-25 06:40:18,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18 WrapperNode
[2020-09-25 06:40:18,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 06:40:18,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 06:40:18,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 06:40:18,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 06:40:18,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (1/1) ...
[2020-09-25 06:40:18,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 06:40:18,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 06:40:18,948 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 06:40:18,948 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 06:40:18,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (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 06:40:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 06:40:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 06:40:19,026 INFO L138 BoogieDeclarations]: Found implementation of procedure f
[2020-09-25 06:40:19,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 06:40:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 06:40:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure f
[2020-09-25 06:40:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 06:40:19,027 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 06:40:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 06:40:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 06:40:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 06:40:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-25 06:40:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 06:40:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 06:40:19,366 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 06:40:19,367 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 06:40:19,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:19 BoogieIcfgContainer
[2020-09-25 06:40:19,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 06:40:19,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 06:40:19,374 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 06:40:19,377 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 06:40:19,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:40:18" (1/3) ...
[2020-09-25 06:40:19,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d63840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:19, skipping insertion in model container
[2020-09-25 06:40:19,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:18" (2/3) ...
[2020-09-25 06:40:19,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d63840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:19, skipping insertion in model container
[2020-09-25 06:40:19,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:19" (3/3) ...
[2020-09-25 06:40:19,382 INFO L109 eAbstractionObserver]: Analyzing ICFG test08.c
[2020-09-25 06:40:19,394 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 06:40:19,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 06:40:19,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 06:40:19,458 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 06:40:19,458 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 06:40:19,458 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 06:40:19,458 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 06:40:19,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 06:40:19,459 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 06:40:19,459 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 06:40:19,459 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 06:40:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states.
[2020-09-25 06:40:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-25 06:40:19,489 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:40:19,491 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]
[2020-09-25 06:40:19,491 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:40:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:40:19,497 INFO L82 PathProgramCache]: Analyzing trace with hash 56438835, now seen corresponding path program 1 times
[2020-09-25 06:40:19,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:40:19,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354208191]
[2020-09-25 06:40:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:40:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:40:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:40:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:40:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:40:21,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:40:21,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50
[2020-09-25 06:40:21,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 06:40:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2081
[2020-09-25 06:40:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:40:21,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:40:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 06:40:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9
[2020-09-25 06:40:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-09-25 06:40:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6
[2020-09-25 06:40:22,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:40:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:40:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:40:22,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:40:22,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-09-25 06:40:22,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:40:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45
[2020-09-25 06:40:22,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:40:22,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:40:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 06:40:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:40:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 06:40:22,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 06:40:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-25 06:40:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:40:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:40:22,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:40:22,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-09-25 06:40:22,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:40:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 06:40:22,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:40:22,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:40:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 06:40:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-25 06:40:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-25 06:40:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:40:22,160 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 06:40:22,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354208191]
[2020-09-25 06:40:22,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 06:40:22,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-25 06:40:22,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623348663]
[2020-09-25 06:40:22,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 06:40:22,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:40:22,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 06:40:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2020-09-25 06:40:22,192 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states.
[2020-09-25 06:40:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:40:22,606 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions.
[2020-09-25 06:40:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-09-25 06:40:22,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41
[2020-09-25 06:40:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:40:22,624 INFO L225 Difference]: With dead ends: 71
[2020-09-25 06:40:22,624 INFO L226 Difference]: Without dead ends: 43
[2020-09-25 06:40:22,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2020-09-25 06:40:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2020-09-25 06:40:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2020-09-25 06:40:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2020-09-25 06:40:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions.
[2020-09-25 06:40:22,698 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 41
[2020-09-25 06:40:22,698 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:40:22,699 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions.
[2020-09-25 06:40:22,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 06:40:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions.
[2020-09-25 06:40:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-09-25 06:40:22,702 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:40:22,702 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]
[2020-09-25 06:40:22,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 06:40:22,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:40:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:40:22,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1088655632, now seen corresponding path program 1 times
[2020-09-25 06:40:22,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:40:22,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66382922]
[2020-09-25 06:40:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:40:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 06:40:22,741 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 06:40:22,744 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 06:40:22,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 06:40:22,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:40:22 BoogieIcfgContainer
[2020-09-25 06:40:22,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 06:40:22,788 INFO L168 Benchmark]: Toolchain (without parser) took 4288.69 ms. Allocated memory was 141.6 MB in the beginning and 243.8 MB in the end (delta: 102.2 MB). Free memory was 103.2 MB in the beginning and 167.7 MB in the end (delta: -64.5 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB.
[2020-09-25 06:40:22,791 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 06:40:22,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.77 ms. Allocated memory is still 141.6 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
[2020-09-25 06:40:22,794 INFO L168 Benchmark]: Boogie Preprocessor took 135.56 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 182.6 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
[2020-09-25 06:40:22,795 INFO L168 Benchmark]: RCFGBuilder took 423.97 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 165.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB.
[2020-09-25 06:40:22,798 INFO L168 Benchmark]: TraceAbstraction took 3409.87 ms. Allocated memory was 204.5 MB in the beginning and 243.8 MB in the end (delta: 39.3 MB). Free memory was 165.2 MB in the beginning and 167.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB.
[2020-09-25 06:40:22,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 305.77 ms. Allocated memory is still 141.6 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 135.56 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 182.6 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 423.97 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 165.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 3409.87 ms. Allocated memory was 204.5 MB in the beginning and 243.8 MB in the end (delta: 39.3 MB). Free memory was 165.2 MB in the beginning and 167.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 36]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L4] int a, b;
[L5] int *p1, *p2;
[L19] p1 = &a
[L20] p2 = &b
[L22] b = 1
[L23] a = 5
[L25] EXPR \read(a)
[L25] a--
[L27] CALL, EXPR f()
[L8] EXPR \read(*p1)
[L8] EXPR \read(*p2)
[L8] EXPR \read(a)
[L8] int v = *p1 + *p2 - a;
[L9] COND TRUE v == 1
[L10] p1 = p2
[L11] return v;
[L27] RET, EXPR f()
[L27] a = f()
[L29] EXPR \read(a)
[L29] COND TRUE a && p1 == p2
[L36] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 149 SDslu, 78 SDs, 0 SdLazy, 107 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 6920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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!
Received shutdown request...