/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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 08:00:13,419 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 08:00:13,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 08:00:13,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 08:00:13,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 08:00:13,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 08:00:13,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 08:00:13,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 08:00:13,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 08:00:13,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 08:00:13,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 08:00:13,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 08:00:13,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 08:00:13,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 08:00:13,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 08:00:13,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 08:00:13,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 08:00:13,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 08:00:13,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 08:00:13,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 08:00:13,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 08:00:13,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 08:00:13,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 08:00:13,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 08:00:13,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 08:00:13,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 08:00:13,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 08:00:13,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 08:00:13,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 08:00:13,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 08:00:13,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 08:00:13,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 08:00:13,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 08:00:13,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 08:00:13,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 08:00:13,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 08:00:13,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 08:00:13,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 08:00:13,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 08:00:13,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 08:00:13,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 08:00:13,542 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 08:00:13,591 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 08:00:13,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 08:00:13,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 08:00:13,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 08:00:13,594 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 08:00:13,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 08:00:13,594 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 08:00:13,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 08:00:13,595 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 08:00:13,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 08:00:13,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 08:00:13,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 08:00:13,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 08:00:13,597 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 08:00:13,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 08:00:13,597 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 08:00:13,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 08:00:13,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 08:00:13,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 08:00:13,598 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 08:00:13,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 08:00:13,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 08:00:13,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 08:00:13,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 08:00:13,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 08:00:13,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 08:00:13,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 08:00:13,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 08:00:13,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 08:00:13,600 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true;
[2020-09-25 08:00:14,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 08:00:14,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 08:00:14,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 08:00:14,213 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 08:00:14,213 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 08:00:14,214 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c
[2020-09-25 08:00:14,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbc78d81e/7c3b97f4482a4af68b8dcfc3fbf144d5/FLAG2e80f4a77
[2020-09-25 08:00:14,867 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 08:00:14,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c
[2020-09-25 08:00:14,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbc78d81e/7c3b97f4482a4af68b8dcfc3fbf144d5/FLAG2e80f4a77
[2020-09-25 08:00:15,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbc78d81e/7c3b97f4482a4af68b8dcfc3fbf144d5
[2020-09-25 08:00:15,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 08:00:15,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 08:00:15,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 08:00:15,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 08:00:15,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 08:00:15,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa297b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15, skipping insertion in model container
[2020-09-25 08:00:15,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 08:00:15,277 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 08:00:15,518 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 08:00:15,529 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 08:00:15,558 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 08:00:15,590 INFO L208 MainTranslator]: Completed translation
[2020-09-25 08:00:15,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15 WrapperNode
[2020-09-25 08:00:15,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 08:00:15,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 08:00:15,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 08:00:15,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 08:00:15,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (1/1) ...
[2020-09-25 08:00:15,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 08:00:15,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 08:00:15,749 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 08:00:15,749 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 08:00:15,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (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 08:00:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 08:00:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 08:00:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 08:00:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 08:00:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 08:00:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 08:00:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 08:00:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 08:00:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 08:00:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 08:00:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-25 08:00:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 08:00:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 08:00:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-25 08:00:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 08:00:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 08:00:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 08:00:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 08:00:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 08:00:16,186 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 08:00:16,187 INFO L295 CfgBuilder]: Removed 2 assume(true) statements.
[2020-09-25 08:00:16,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:00:16 BoogieIcfgContainer
[2020-09-25 08:00:16,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 08:00:16,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 08:00:16,194 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 08:00:16,197 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 08:00:16,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:00:15" (1/3) ...
[2020-09-25 08:00:16,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7f9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:00:16, skipping insertion in model container
[2020-09-25 08:00:16,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:15" (2/3) ...
[2020-09-25 08:00:16,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7f9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:00:16, skipping insertion in model container
[2020-09-25 08:00:16,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:00:16" (3/3) ...
[2020-09-25 08:00:16,202 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c
[2020-09-25 08:00:16,213 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 08:00:16,223 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 08:00:16,244 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 08:00:16,274 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 08:00:16,275 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 08:00:16,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 08:00:16,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 08:00:16,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 08:00:16,275 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 08:00:16,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 08:00:16,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 08:00:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states.
[2020-09-25 08:00:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-09-25 08:00:16,307 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:00:16,309 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]
[2020-09-25 08:00:16,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:00:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:00:16,316 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times
[2020-09-25 08:00:16,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:00:16,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507454460]
[2020-09-25 08:00:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:00:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-09-25 08:00:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:00:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446
[2020-09-25 08:00:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:16,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31
[2020-09-25 08:00:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-25 08:00:17,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:00:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:17,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:17,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 08:00:17,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-25 08:00:17,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:17,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 08:00:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:17,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:17,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:17,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 08:00:17,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 08:00:17,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:17,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:17,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:17,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:17,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:17,083 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 08:00:17,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507454460]
[2020-09-25 08:00:17,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:00:17,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-25 08:00:17,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304216383]
[2020-09-25 08:00:17,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-25 08:00:17,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:00:17,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-25 08:00:17,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 08:00:17,114 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states.
[2020-09-25 08:00:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:00:17,274 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions.
[2020-09-25 08:00:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-25 08:00:17,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30
[2020-09-25 08:00:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:00:17,289 INFO L225 Difference]: With dead ends: 101
[2020-09-25 08:00:17,289 INFO L226 Difference]: Without dead ends: 47
[2020-09-25 08:00:17,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 08:00:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-09-25 08:00:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2020-09-25 08:00:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-09-25 08:00:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions.
[2020-09-25 08:00:17,350 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30
[2020-09-25 08:00:17,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:00:17,351 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions.
[2020-09-25 08:00:17,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-25 08:00:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions.
[2020-09-25 08:00:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-09-25 08:00:17,353 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:00:17,353 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]
[2020-09-25 08:00:17,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 08:00:17,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:00:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:00:17,355 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times
[2020-09-25 08:00:17,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:00:17,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081552282]
[2020-09-25 08:00:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:00:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:17,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:17,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:17,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-09-25 08:00:17,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:00:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488
[2020-09-25 08:00:17,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:17,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 08:00:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 08:00:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-25 08:00:17,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 08:00:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:00:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:17,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 08:00:17,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:17,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 08:00:17,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:17,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:17,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 08:00:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:17,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:17,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 08:00:17,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-25 08:00:17,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:17,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 08:00:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:00:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:17,991 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 08:00:17,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081552282]
[2020-09-25 08:00:17,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:00:17,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 08:00:17,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558759031]
[2020-09-25 08:00:17,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 08:00:17,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:00:17,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 08:00:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 08:00:17,999 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states.
[2020-09-25 08:00:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:00:18,226 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions.
[2020-09-25 08:00:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 08:00:18,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30
[2020-09-25 08:00:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:00:18,228 INFO L225 Difference]: With dead ends: 67
[2020-09-25 08:00:18,228 INFO L226 Difference]: Without dead ends: 49
[2020-09-25 08:00:18,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-25 08:00:18,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-09-25 08:00:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2020-09-25 08:00:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2020-09-25 08:00:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions.
[2020-09-25 08:00:18,252 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30
[2020-09-25 08:00:18,253 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:00:18,253 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions.
[2020-09-25 08:00:18,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 08:00:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions.
[2020-09-25 08:00:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-09-25 08:00:18,257 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:00:18,257 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 08:00:18,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 08:00:18,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:00:18,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:00:18,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times
[2020-09-25 08:00:18,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:00:18,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258449614]
[2020-09-25 08:00:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:00:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:18,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:20,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:20,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53
[2020-09-25 08:00:20,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-25 08:00:20,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2183
[2020-09-25 08:00:20,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:20,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 08:00:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 08:00:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34
[2020-09-25 08:00:20,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:00:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:20,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:20,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 08:00:20,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 08:00:20,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:20,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 08:00:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:20,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 08:00:20,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-25 08:00:20,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:20,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 08:00:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:20,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:00:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 08:00:20,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258449614]
[2020-09-25 08:00:20,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:00:20,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-25 08:00:20,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436500951]
[2020-09-25 08:00:20,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-25 08:00:20,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:00:20,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-25 08:00:20,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-09-25 08:00:20,650 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states.
[2020-09-25 08:00:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:00:20,916 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions.
[2020-09-25 08:00:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-25 08:00:20,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42
[2020-09-25 08:00:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:00:20,918 INFO L225 Difference]: With dead ends: 64
[2020-09-25 08:00:20,918 INFO L226 Difference]: Without dead ends: 58
[2020-09-25 08:00:20,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2020-09-25 08:00:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-09-25 08:00:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52.
[2020-09-25 08:00:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-09-25 08:00:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions.
[2020-09-25 08:00:20,928 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42
[2020-09-25 08:00:20,928 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:00:20,929 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions.
[2020-09-25 08:00:20,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-25 08:00:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions.
[2020-09-25 08:00:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-25 08:00:20,930 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:00:20,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:00:20,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 08:00:20,931 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:00:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:00:20,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times
[2020-09-25 08:00:20,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:00:20,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465861142]
[2020-09-25 08:00:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:00:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:21,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:21,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-25 08:00:21,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 08:00:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884
[2020-09-25 08:00:21,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:21,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:21,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 08:00:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38
[2020-09-25 08:00:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3
[2020-09-25 08:00:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:00:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:21,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:21,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 08:00:21,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 08:00:21,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:21,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 08:00:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 08:00:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-25 08:00:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:21,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 08:00:21,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465861142]
[2020-09-25 08:00:21,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:00:21,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-25 08:00:21,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783404150]
[2020-09-25 08:00:21,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-25 08:00:21,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:00:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-25 08:00:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 08:00:21,907 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states.
[2020-09-25 08:00:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:00:22,025 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions.
[2020-09-25 08:00:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-25 08:00:22,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46
[2020-09-25 08:00:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:00:22,026 INFO L225 Difference]: With dead ends: 87
[2020-09-25 08:00:22,027 INFO L226 Difference]: Without dead ends: 58
[2020-09-25 08:00:22,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 08:00:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-09-25 08:00:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55.
[2020-09-25 08:00:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-09-25 08:00:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions.
[2020-09-25 08:00:22,036 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46
[2020-09-25 08:00:22,036 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:00:22,036 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions.
[2020-09-25 08:00:22,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-25 08:00:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions.
[2020-09-25 08:00:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-25 08:00:22,038 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:00:22,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1]
[2020-09-25 08:00:22,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 08:00:22,039 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:00:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:00:22,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times
[2020-09-25 08:00:22,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:00:22,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405372833]
[2020-09-25 08:00:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:00:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:24,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:27,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:27,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63
[2020-09-25 08:00:27,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12
[2020-09-25 08:00:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008
[2020-09-25 08:00:27,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:27,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 08:00:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 08:00:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-09-25 08:00:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:00:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:27,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:27,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 08:00:27,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 08:00:27,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:27,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:00:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:00:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 08:00:27,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 08:00:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:00:27,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:00:27,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:00:27,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 08:00:27,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:00:27,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-25 08:00:27,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:00:27,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:00:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 08:00:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:00:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:00:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:00:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 08:00:27,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405372833]
[2020-09-25 08:00:27,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:00:27,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-09-25 08:00:27,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914931506]
[2020-09-25 08:00:27,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-25 08:00:27,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:00:27,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-25 08:00:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2020-09-25 08:00:27,347 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 12 states.
[2020-09-25 08:00:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:00:27,810 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions.
[2020-09-25 08:00:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-09-25 08:00:27,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52
[2020-09-25 08:00:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:00:27,812 INFO L225 Difference]: With dead ends: 88
[2020-09-25 08:00:27,813 INFO L226 Difference]: Without dead ends: 64
[2020-09-25 08:00:27,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462
[2020-09-25 08:00:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2020-09-25 08:00:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61.
[2020-09-25 08:00:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-09-25 08:00:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions.
[2020-09-25 08:00:27,830 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 52
[2020-09-25 08:00:27,830 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:00:27,831 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions.
[2020-09-25 08:00:27,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-25 08:00:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions.
[2020-09-25 08:00:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-09-25 08:00:27,832 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:00:27,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1]
[2020-09-25 08:00:27,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 08:00:27,833 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:00:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:00:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times
[2020-09-25 08:00:27,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:00:27,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778594652]
[2020-09-25 08:00:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:00:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 08:00:27,866 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 08:00:27,867 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 08:00:27,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 08:00:27,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:00:27 BoogieIcfgContainer
[2020-09-25 08:00:27,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 08:00:27,928 INFO L168 Benchmark]: Toolchain (without parser) took 12697.45 ms. Allocated memory was 147.8 MB in the beginning and 290.5 MB in the end (delta: 142.6 MB). Free memory was 103.0 MB in the beginning and 147.6 MB in the end (delta: -44.6 MB). Peak memory consumption was 98.0 MB. Max. memory is 7.1 GB.
[2020-09-25 08:00:27,929 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-09-25 08:00:27,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.90 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
[2020-09-25 08:00:27,931 INFO L168 Benchmark]: Boogie Preprocessor took 155.01 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-25 08:00:27,932 INFO L168 Benchmark]: RCFGBuilder took 443.97 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 163.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
[2020-09-25 08:00:27,933 INFO L168 Benchmark]: TraceAbstraction took 11725.53 ms. Allocated memory was 204.5 MB in the beginning and 290.5 MB in the end (delta: 86.0 MB). Free memory was 162.8 MB in the beginning and 147.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB.
[2020-09-25 08:00:27,937 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 361.90 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 155.01 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 443.97 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 163.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 11725.53 ms. Allocated memory was 204.5 MB in the beginning and 290.5 MB in the end (delta: 86.0 MB). Free memory was 162.8 MB in the beginning and 147.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L17] int N;
[L21] N = __VERIFIER_nondet_int()
[L22] COND FALSE !(N <= 0)
[L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L11] COND FALSE !(!cond)
[L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L25] int i;
[L26] long long sum[1];
[L27] int *a = malloc(sizeof(int)*N);
[L29] i=0
[L29] COND TRUE i<N
[L31] COND TRUE i%3==0
[L32] a[i] = 3
[L29] i++
[L29] COND TRUE i<N
[L31] COND FALSE !(i%3==0)
[L34] a[i] = 30
[L29] i++
[L29] COND FALSE !(i<N)
[L38] i=0
[L38] COND TRUE i<N
[L40] COND TRUE i==0
[L41] sum[0] = 0
[L38] i++
[L38] COND TRUE i<N
[L40] COND FALSE !(i==0)
[L43] EXPR sum[0]
[L43] EXPR a[i]
[L43] sum[0] = sum[0] + a[i]
[L38] i++
[L38] COND FALSE !(i<N)
[L46] EXPR sum[0]
[L46] CALL __VERIFIER_assert(sum[0] <= 3*N)
[L13] COND TRUE !(cond)
[L13] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 220 SDtfs, 277 SDslu, 280 SDs, 0 SdLazy, 555 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=5, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 23899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 5/12 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...