/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/alternating_list-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 03:13:34,548 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 03:13:34,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 03:13:34,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 03:13:34,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 03:13:34,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 03:13:34,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 03:13:34,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 03:13:34,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 03:13:34,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 03:13:34,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 03:13:34,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 03:13:34,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 03:13:34,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 03:13:34,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 03:13:34,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 03:13:34,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 03:13:34,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 03:13:34,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 03:13:34,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 03:13:34,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 03:13:34,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 03:13:34,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 03:13:34,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 03:13:34,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 03:13:34,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 03:13:34,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 03:13:34,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 03:13:34,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 03:13:34,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 03:13:34,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 03:13:34,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 03:13:34,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 03:13:34,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 03:13:34,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 03:13:34,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 03:13:34,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 03:13:34,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 03:13:34,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 03:13:34,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 03:13:34,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 03:13:34,652 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 03:13:34,707 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 03:13:34,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 03:13:34,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 03:13:34,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 03:13:34,710 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 03:13:34,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 03:13:34,710 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 03:13:34,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 03:13:34,711 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 03:13:34,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 03:13:34,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 03:13:34,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 03:13:34,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 03:13:34,713 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 03:13:34,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 03:13:34,713 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 03:13:34,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 03:13:34,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 03:13:34,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 03:13:34,714 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 03:13:34,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 03:13:34,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 03:13:34,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 03:13:34,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 03:13:34,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 03:13:34,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 03:13:34,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 03:13:34,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 03:13:34,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 03:13:34,716 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true;
[2020-09-25 03:13:35,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 03:13:35,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 03:13:35,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 03:13:35,176 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 03:13:35,177 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 03:13:35,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list-2.i
[2020-09-25 03:13:35,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c38bcaf/4bd4e7dcee5e4b6e8fbe5ccdc4bb8f46/FLAG7e1d4431c
[2020-09-25 03:13:35,931 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 03:13:35,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/alternating_list-2.i
[2020-09-25 03:13:35,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c38bcaf/4bd4e7dcee5e4b6e8fbe5ccdc4bb8f46/FLAG7e1d4431c
[2020-09-25 03:13:36,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c38bcaf/4bd4e7dcee5e4b6e8fbe5ccdc4bb8f46
[2020-09-25 03:13:36,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 03:13:36,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 03:13:36,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 03:13:36,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 03:13:36,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 03:13:36,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36, skipping insertion in model container
[2020-09-25 03:13:36,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 03:13:36,288 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 03:13:36,773 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:13:36,791 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 03:13:36,850 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:13:36,921 INFO L208 MainTranslator]: Completed translation
[2020-09-25 03:13:36,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36 WrapperNode
[2020-09-25 03:13:36,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 03:13:36,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 03:13:36,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 03:13:36,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 03:13:36,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (1/1) ...
[2020-09-25 03:13:36,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 03:13:36,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 03:13:36,999 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 03:13:36,999 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 03:13:37,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (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 03:13:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 03:13:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 03:13:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32
[2020-09-25 03:13:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64
[2020-09-25 03:13:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2020-09-25 03:13:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2020-09-25 03:13:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2020-09-25 03:13:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit
[2020-09-25 03:13:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 03:13:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 03:13:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 03:13:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-09-25 03:13:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure atof
[2020-09-25 03:13:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure atoi
[2020-09-25 03:13:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure atol
[2020-09-25 03:13:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure atoll
[2020-09-25 03:13:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtod
[2020-09-25 03:13:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtof
[2020-09-25 03:13:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtold
[2020-09-25 03:13:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtol
[2020-09-25 03:13:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul
[2020-09-25 03:13:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq
[2020-09-25 03:13:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq
[2020-09-25 03:13:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll
[2020-09-25 03:13:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull
[2020-09-25 03:13:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure l64a
[2020-09-25 03:13:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure a64l
[2020-09-25 03:13:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32
[2020-09-25 03:13:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64
[2020-09-25 03:13:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity
[2020-09-25 03:13:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity
[2020-09-25 03:13:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity
[2020-09-25 03:13:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure select
[2020-09-25 03:13:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure pselect
[2020-09-25 03:13:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-09-25 03:13:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-09-25 03:13:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-09-25 03:13:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure random
[2020-09-25 03:13:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure srandom
[2020-09-25 03:13:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure initstate
[2020-09-25 03:13:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure setstate
[2020-09-25 03:13:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure random_r
[2020-09-25 03:13:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r
[2020-09-25 03:13:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r
[2020-09-25 03:13:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r
[2020-09-25 03:13:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure rand
[2020-09-25 03:13:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure srand
[2020-09-25 03:13:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r
[2020-09-25 03:13:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure drand48
[2020-09-25 03:13:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure erand48
[2020-09-25 03:13:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48
[2020-09-25 03:13:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48
[2020-09-25 03:13:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48
[2020-09-25 03:13:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48
[2020-09-25 03:13:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure srand48
[2020-09-25 03:13:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure seed48
[2020-09-25 03:13:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48
[2020-09-25 03:13:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r
[2020-09-25 03:13:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r
[2020-09-25 03:13:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-09-25 03:13:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-09-25 03:13:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-09-25 03:13:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-09-25 03:13:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r
[2020-09-25 03:13:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r
[2020-09-25 03:13:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-09-25 03:13:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-25 03:13:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2020-09-25 03:13:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure realloc
[2020-09-25 03:13:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2020-09-25 03:13:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure alloca
[2020-09-25 03:13:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure valloc
[2020-09-25 03:13:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-09-25 03:13:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-09-25 03:13:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 03:13:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure atexit
[2020-09-25 03:13:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-09-25 03:13:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit
[2020-09-25 03:13:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2020-09-25 03:13:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit
[2020-09-25 03:13:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit
[2020-09-25 03:13:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure getenv
[2020-09-25 03:13:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure putenv
[2020-09-25 03:13:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure setenv
[2020-09-25 03:13:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv
[2020-09-25 03:13:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv
[2020-09-25 03:13:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp
[2020-09-25 03:13:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp
[2020-09-25 03:13:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps
[2020-09-25 03:13:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-09-25 03:13:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure system
[2020-09-25 03:13:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure realpath
[2020-09-25 03:13:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch
[2020-09-25 03:13:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure qsort
[2020-09-25 03:13:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure abs
[2020-09-25 03:13:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure labs
[2020-09-25 03:13:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure llabs
[2020-09-25 03:13:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure div
[2020-09-25 03:13:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv
[2020-09-25 03:13:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv
[2020-09-25 03:13:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt
[2020-09-25 03:13:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt
[2020-09-25 03:13:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt
[2020-09-25 03:13:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt
[2020-09-25 03:13:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt
[2020-09-25 03:13:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt
[2020-09-25 03:13:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-09-25 03:13:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-09-25 03:13:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-09-25 03:13:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-09-25 03:13:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure mblen
[2020-09-25 03:13:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc
[2020-09-25 03:13:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb
[2020-09-25 03:13:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-09-25 03:13:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs
[2020-09-25 03:13:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch
[2020-09-25 03:13:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt
[2020-09-25 03:13:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg
[2020-09-25 03:13:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure myexit
[2020-09-25 03:13:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 03:13:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-25 03:13:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 03:13:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-25 03:13:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-25 03:13:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 03:13:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 03:13:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 03:13:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 03:13:37,440 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2020-09-25 03:13:37,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 03:13:37,712 INFO L295 CfgBuilder]: Removed 3 assume(true) statements.
[2020-09-25 03:13:37,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:37 BoogieIcfgContainer
[2020-09-25 03:13:37,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 03:13:37,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 03:13:37,719 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 03:13:37,723 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 03:13:37,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:36" (1/3) ...
[2020-09-25 03:13:37,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0edea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:37, skipping insertion in model container
[2020-09-25 03:13:37,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:36" (2/3) ...
[2020-09-25 03:13:37,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0edea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:37, skipping insertion in model container
[2020-09-25 03:13:37,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:37" (3/3) ...
[2020-09-25 03:13:37,727 INFO L109 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i
[2020-09-25 03:13:37,739 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 03:13:37,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 03:13:37,775 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 03:13:37,807 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 03:13:37,808 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 03:13:37,808 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 03:13:37,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 03:13:37,808 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 03:13:37,808 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 03:13:37,808 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 03:13:37,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 03:13:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states.
[2020-09-25 03:13:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-09-25 03:13:37,846 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 03:13:37,847 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]
[2020-09-25 03:13:37,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:13:37,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:13:37,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1267394549, now seen corresponding path program 1 times
[2020-09-25 03:13:37,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:13:37,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008893003]
[2020-09-25 03:13:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:13:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:13:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:13:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:13:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:13:38,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:13:38,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 03:13:38,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 03:13:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708
[2020-09-25 03:13:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:13:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 03:13:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-25 03:13:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 03:13:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 03:13:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:13:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:13:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:13:38,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:13:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:13:38,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:13:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 03:13:38,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:13:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:13:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:13:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:13:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:13:38,880 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 03:13:38,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008893003]
[2020-09-25 03:13:38,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:13:38,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 03:13:38,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986109449]
[2020-09-25 03:13:38,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 03:13:38,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:13:38,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 03:13:38,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 03:13:38,910 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 7 states.
[2020-09-25 03:13:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:13:39,271 INFO L93 Difference]: Finished difference Result 190 states and 224 transitions.
[2020-09-25 03:13:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 03:13:39,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26
[2020-09-25 03:13:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:13:39,286 INFO L225 Difference]: With dead ends: 190
[2020-09-25 03:13:39,286 INFO L226 Difference]: Without dead ends: 83
[2020-09-25 03:13:39,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2020-09-25 03:13:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-09-25 03:13:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 53.
[2020-09-25 03:13:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-09-25 03:13:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions.
[2020-09-25 03:13:39,348 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 26
[2020-09-25 03:13:39,348 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:13:39,348 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions.
[2020-09-25 03:13:39,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 03:13:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions.
[2020-09-25 03:13:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-25 03:13:39,350 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 03:13:39,351 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:13:39,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 03:13:39,351 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:13:39,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:13:39,352 INFO L82 PathProgramCache]: Analyzing trace with hash 798924263, now seen corresponding path program 1 times
[2020-09-25 03:13:39,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:13:39,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563247000]
[2020-09-25 03:13:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:13:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:13:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:13:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:13:39,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:13:39,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48
[2020-09-25 03:13:39,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:13:39,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203
[2020-09-25 03:13:39,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:13:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 03:13:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 03:13:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 03:13:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:13:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:13:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:13:39,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:13:39,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:13:39,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:13:39,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:13:39,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 03:13:39,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:13:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:13:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:13:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:13:39,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:13:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:13:39,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563247000]
[2020-09-25 03:13:39,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:13:39,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-25 03:13:39,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279743067]
[2020-09-25 03:13:39,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-25 03:13:39,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:13:39,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-25 03:13:39,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 03:13:39,649 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states.
[2020-09-25 03:13:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:13:39,790 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions.
[2020-09-25 03:13:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-25 03:13:39,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41
[2020-09-25 03:13:39,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:13:39,793 INFO L225 Difference]: With dead ends: 118
[2020-09-25 03:13:39,793 INFO L226 Difference]: Without dead ends: 80
[2020-09-25 03:13:39,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-25 03:13:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2020-09-25 03:13:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71.
[2020-09-25 03:13:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-09-25 03:13:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions.
[2020-09-25 03:13:39,805 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 41
[2020-09-25 03:13:39,805 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:13:39,805 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions.
[2020-09-25 03:13:39,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-25 03:13:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions.
[2020-09-25 03:13:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-25 03:13:39,807 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 03:13:39,807 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:13:39,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 03:13:39,808 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:13:39,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:13:39,808 INFO L82 PathProgramCache]: Analyzing trace with hash -223654578, now seen corresponding path program 1 times
[2020-09-25 03:13:39,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:13:39,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019098522]
[2020-09-25 03:13:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:13:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 03:13:39,862 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 03:13:39,862 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 03:13:39,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 03:13:39,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:13:39 BoogieIcfgContainer
[2020-09-25 03:13:39,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 03:13:39,895 INFO L168 Benchmark]: Toolchain (without parser) took 3678.86 ms. Allocated memory was 140.0 MB in the beginning and 248.5 MB in the end (delta: 108.5 MB). Free memory was 102.4 MB in the beginning and 213.0 MB in the end (delta: -110.7 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB.
[2020-09-25 03:13:39,897 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 03:13:39,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.53 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.7 MB in the beginning and 171.2 MB in the end (delta: -69.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB.
[2020-09-25 03:13:39,898 INFO L168 Benchmark]: Boogie Preprocessor took 74.66 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB.
[2020-09-25 03:13:39,899 INFO L168 Benchmark]: RCFGBuilder took 719.03 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 119.6 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB.
[2020-09-25 03:13:39,900 INFO L168 Benchmark]: TraceAbstraction took 2172.92 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 119.6 MB in the beginning and 213.0 MB in the end (delta: -93.5 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB.
[2020-09-25 03:13:39,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 703.53 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.7 MB in the beginning and 171.2 MB in the end (delta: -69.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 74.66 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 719.03 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 119.6 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2172.92 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 119.6 MB in the beginning and 213.0 MB in the end (delta: -93.5 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 562]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L521] int flag = 1;
[L522] List a = (List) malloc(sizeof(struct node));
[L523] COND FALSE !(a == 0)
[L524] List t;
[L525] List p = a;
[L526] COND TRUE __VERIFIER_nondet_int()
[L527] COND TRUE \read(flag)
[L528] p->h = 2
[L529] flag = 0
[L534] t = (List) malloc(sizeof(struct node))
[L535] COND FALSE !(t == 0)
[L536] p->n = t
[L537] EXPR p->n
[L537] p = p->n
[L526] COND FALSE !(__VERIFIER_nondet_int())
[L539] p->h = 3
[L540] p = a
[L541] flag = 1
[L542] EXPR p->h
[L542] COND TRUE p->h != 3
[L543] COND TRUE \read(flag)
[L544] flag = 0
[L545] EXPR p->h
[L545] COND TRUE p->h != 1
[L562] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 9 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 136 SDslu, 267 SDs, 0 SdLazy, 254 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 2 MinimizatonAttempts, 39 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 4330 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 proved your program to be incorrect!
Received shutdown request...