/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s4if.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:54:40,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:54:40,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:54:41,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:54:41,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:54:41,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:54:41,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:54:41,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:54:41,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:54:41,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:54:41,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:54:41,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:54:41,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:54:41,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:54:41,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:54:41,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:54:41,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:54:41,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:54:41,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:54:41,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:54:41,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:54:41,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:54:41,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:54:41,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:54:41,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:54:41,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:54:41,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:54:41,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:54:41,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:54:41,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:54:41,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:54:41,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:54:41,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:54:41,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:54:41,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:54:41,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:54:41,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:54:41,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:54:41,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:54:41,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:54:41,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:54:41,059 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 [2020-10-13 23:54:41,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:54:41,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:54:41,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:54:41,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:54:41,085 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:54:41,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:54:41,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:54:41,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:54:41,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:54:41,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:54:41,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:54:41,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:54:41,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:54:41,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:54:41,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:54:41,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:54:41,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:54:41,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:54:41,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:54:41,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:54:41,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:54:41,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:54:41,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:54:41,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:54:41,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:54:41,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:54:41,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:54:41,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:54:41,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:54:41,090 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:54:41,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:54:41,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:54:41,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:54:41,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:54:41,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:54:41,497 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4if.c [2020-10-13 23:54:41,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3d92f74f/25c27296ec7a4d169ebc411b6f9c3c3c/FLAGcb249ad26 [2020-10-13 23:54:42,019 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:54:42,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4if.c [2020-10-13 23:54:42,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3d92f74f/25c27296ec7a4d169ebc411b6f9c3c3c/FLAGcb249ad26 [2020-10-13 23:54:42,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3d92f74f/25c27296ec7a4d169ebc411b6f9c3c3c [2020-10-13 23:54:42,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:54:42,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:54:42,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:54:42,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:54:42,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:54:42,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b337bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42, skipping insertion in model container [2020-10-13 23:54:42,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:54:42,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:54:42,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:54:42,658 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:54:42,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:54:42,699 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:54:42,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42 WrapperNode [2020-10-13 23:54:42,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:54:42,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:54:42,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:54:42,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:54:42,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (1/1) ... [2020-10-13 23:54:42,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:54:42,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:54:42,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:54:42,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:54:42,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (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 [2020-10-13 23:54:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:54:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:54:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:54:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:54:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:54:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:54:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:54:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:54:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:54:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:54:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 23:54:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:54:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:54:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 23:54:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:54:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:54:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:54:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:54:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:54:43,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:54:43,245 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 23:54:43,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:43 BoogieIcfgContainer [2020-10-13 23:54:43,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:54:43,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:54:43,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:54:43,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:54:43,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:54:42" (1/3) ... [2020-10-13 23:54:43,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6793f3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:43, skipping insertion in model container [2020-10-13 23:54:43,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:42" (2/3) ... [2020-10-13 23:54:43,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6793f3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:43, skipping insertion in model container [2020-10-13 23:54:43,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:43" (3/3) ... [2020-10-13 23:54:43,259 INFO L109 eAbstractionObserver]: Analyzing ICFG s4if.c [2020-10-13 23:54:43,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:54:43,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:54:43,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:54:43,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:54:43,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:54:43,317 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:54:43,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:54:43,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:54:43,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:54:43,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:54:43,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:54:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-13 23:54:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:54:43,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:43,346 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] [2020-10-13 23:54:43,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-10-13 23:54:43,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:43,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394709960] [2020-10-13 23:54:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:44,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:54:44,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:54:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-13 23:54:44,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:44,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:54:44,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:44,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:54:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:54:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:44,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:54:44,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:54:44,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:44,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:54:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:54:44,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:44,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:54:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:44,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:54:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:54:44,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394709960] [2020-10-13 23:54:44,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:54:44,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:54:44,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31345035] [2020-10-13 23:54:44,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:54:44,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:54:44,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:54:44,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:54:44,124 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-13 23:54:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:54:44,216 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-10-13 23:54:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:54:44,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 23:54:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:54:44,227 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:54:44,227 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 23:54:44,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:54:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 23:54:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-13 23:54:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 23:54:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-13 23:54:44,278 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-10-13 23:54:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:54:44,279 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-13 23:54:44,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:54:44,280 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-13 23:54:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:54:44,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:44,282 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] [2020-10-13 23:54:44,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:54:44,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:44,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-10-13 23:54:44,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:44,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123516733] [2020-10-13 23:54:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:54:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:54:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 23:54:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:44,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:54:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:54:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:54:44,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-13 23:54:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:54:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:44,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:54:44,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:44,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:54:44,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:44,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:44,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:54:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:44,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:54:44,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:54:44,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:44,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:44,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:54:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:54:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:54:44,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123516733] [2020-10-13 23:54:44,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:54:44,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:54:44,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201923264] [2020-10-13 23:54:44,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:54:44,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:54:44,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:54:44,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:54:44,666 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-13 23:54:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:54:44,801 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-13 23:54:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:54:44,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-13 23:54:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:54:44,803 INFO L225 Difference]: With dead ends: 37 [2020-10-13 23:54:44,803 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:54:44,804 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 [2020-10-13 23:54:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:54:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 23:54:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:54:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-13 23:54:44,812 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-10-13 23:54:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:54:44,812 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-13 23:54:44,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:54:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-13 23:54:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:54:44,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:44,814 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] [2020-10-13 23:54:44,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:54:44,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:44,815 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-10-13 23:54:44,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:44,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536749506] [2020-10-13 23:54:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:45,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:45,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:54:45,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:54:45,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-13 23:54:45,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:45,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:54:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:54:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 23:54:45,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:54:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:46,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:54:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:54:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:46,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:54:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:46,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:46,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:54:46,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:54:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:46,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:54:46,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536749506] [2020-10-13 23:54:46,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:54:46,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:54:46,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689074558] [2020-10-13 23:54:46,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:54:46,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:54:46,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:54:46,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:54:46,032 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-10-13 23:54:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:54:46,803 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-13 23:54:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:54:46,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-13 23:54:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:54:46,807 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:54:46,808 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:54:46,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:54:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:54:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-10-13 23:54:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:54:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-13 23:54:46,819 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 26 [2020-10-13 23:54:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:54:46,819 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-13 23:54:46,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:54:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-13 23:54:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:54:46,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:46,821 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] [2020-10-13 23:54:46,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:54:46,821 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:46,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-10-13 23:54:46,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:46,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316333783] [2020-10-13 23:54:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:46,834 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 23:54:46,835 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 23:54:46,835 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 23:54:46,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:54:46,857 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 23:54:46,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:54:46 BoogieIcfgContainer [2020-10-13 23:54:46,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 23:54:46,860 INFO L168 Benchmark]: Toolchain (without parser) took 4440.08 ms. Allocated memory was 144.7 MB in the beginning and 251.7 MB in the end (delta: 107.0 MB). Free memory was 100.9 MB in the beginning and 209.5 MB in the end (delta: -108.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 23:54:46,861 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-13 23:54:46,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.75 ms. Allocated memory is still 144.7 MB. Free memory was 100.7 MB in the beginning and 90.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:46,863 INFO L168 Benchmark]: Boogie Preprocessor took 133.98 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 90.3 MB in the beginning and 177.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:46,864 INFO L168 Benchmark]: RCFGBuilder took 414.81 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 159.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:46,865 INFO L168 Benchmark]: TraceAbstraction took 3606.68 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 159.5 MB in the beginning and 209.5 MB in the end (delta: -50.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:46,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.75 ms. Allocated memory is still 144.7 MB. Free memory was 100.7 MB in the beginning and 90.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.98 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 90.3 MB in the beginning and 177.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.81 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 159.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3606.68 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 159.5 MB in the beginning and 209.5 MB in the end (delta: -50.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i