/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-industry-pattern/array_mul_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:56:06,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:56:06,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:56:06,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:56:06,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:56:06,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:56:06,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:56:06,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:56:06,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:56:06,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:56:06,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:56:06,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:56:06,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:56:06,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:56:06,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:56:06,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:56:06,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:56:06,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:56:06,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:56:06,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:56:06,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:56:06,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:56:06,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:56:06,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:56:06,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:56:06,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:56:06,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:56:06,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:56:06,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:56:06,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:56:06,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:56:06,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:56:06,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:56:06,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:56:06,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:56:06,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:56:06,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:56:06,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:56:06,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:56:06,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:56:06,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:56:06,807 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 23:56:06,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:56:06,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:56:06,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:56:06,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:56:06,844 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:56:06,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:56:06,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:56:06,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:56:06,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:56:06,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:56:06,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:56:06,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:56:06,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:56:06,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:56:06,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:56:06,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:56:06,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:56:06,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:56:06,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:56:06,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:56:06,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:56:06,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:56:06,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:56:06,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:56:06,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:56:06,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:56:06,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:56:06,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:56:06,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:56:06,849 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 23:56:07,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:56:07,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:56:07,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:56:07,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:56:07,144 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:56:07,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_mul_init.i [2020-10-13 23:56:07,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b58cf4013/f30478a2eac24955820659f568eee6ff/FLAG6f85d3d60 [2020-10-13 23:56:07,645 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:56:07,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_mul_init.i [2020-10-13 23:56:07,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b58cf4013/f30478a2eac24955820659f568eee6ff/FLAG6f85d3d60 [2020-10-13 23:56:08,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b58cf4013/f30478a2eac24955820659f568eee6ff [2020-10-13 23:56:08,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:56:08,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:56:08,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:56:08,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:56:08,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:56:08,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08, skipping insertion in model container [2020-10-13 23:56:08,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:56:08,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:56:08,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:56:08,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:56:08,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:56:08,313 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:56:08,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08 WrapperNode [2020-10-13 23:56:08,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:56:08,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:56:08,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:56:08,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:56:08,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (1/1) ... [2020-10-13 23:56:08,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:56:08,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:56:08,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:56:08,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:56:08,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (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 23:56:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:56:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:56:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:56:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:56:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:56:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:56:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-13 23:56:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:56:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:56:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:56:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:56:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:56:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:56:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:56:08,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:56:08,799 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:56:08,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:56:08 BoogieIcfgContainer [2020-10-13 23:56:08,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:56:08,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:56:08,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:56:08,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:56:08,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:56:08" (1/3) ... [2020-10-13 23:56:08,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748592e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:56:08, skipping insertion in model container [2020-10-13 23:56:08,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:08" (2/3) ... [2020-10-13 23:56:08,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748592e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:56:08, skipping insertion in model container [2020-10-13 23:56:08,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:56:08" (3/3) ... [2020-10-13 23:56:08,810 INFO L109 eAbstractionObserver]: Analyzing ICFG array_mul_init.i [2020-10-13 23:56:08,821 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:56:08,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:56:08,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:56:08,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:56:08,862 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:56:08,862 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:56:08,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:56:08,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:56:08,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:56:08,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:56:08,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:56:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-13 23:56:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 23:56:08,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:08,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:08,886 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:08,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:08,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1583089931, now seen corresponding path program 1 times [2020-10-13 23:56:08,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:08,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656284617] [2020-10-13 23:56:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:56:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:56:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-13 23:56:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 23:56:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 23:56:09,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:56:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:09,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:09,426 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 23:56:09,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656284617] [2020-10-13 23:56:09,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:56:09,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:56:09,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824210414] [2020-10-13 23:56:09,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:56:09,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:09,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:56:09,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:56:09,454 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-13 23:56:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:09,555 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-10-13 23:56:09,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:56:09,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-13 23:56:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:09,566 INFO L225 Difference]: With dead ends: 50 [2020-10-13 23:56:09,567 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 23:56:09,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:56:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 23:56:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-13 23:56:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 23:56:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-13 23:56:09,610 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2020-10-13 23:56:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:09,610 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-13 23:56:09,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:56:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-13 23:56:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 23:56:09,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:09,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:09,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:56:09,613 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1899913894, now seen corresponding path program 1 times [2020-10-13 23:56:09,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:09,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452941307] [2020-10-13 23:56:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:09,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:56:09,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:56:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 23:56:09,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:09,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:56:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:56:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:56:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:09,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:09,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:09,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:09,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:56:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:09,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:09,959 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 23:56:09,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452941307] [2020-10-13 23:56:09,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:56:09,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:56:09,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549425960] [2020-10-13 23:56:09,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:56:09,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:09,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:56:09,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:56:09,963 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-10-13 23:56:10,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:10,064 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2020-10-13 23:56:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:56:10,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 23:56:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:10,067 INFO L225 Difference]: With dead ends: 50 [2020-10-13 23:56:10,067 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:56:10,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:56:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:56:10,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2020-10-13 23:56:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:56:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 23:56:10,080 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2020-10-13 23:56:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:10,080 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 23:56:10,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:56:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 23:56:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:56:10,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:10,081 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 23:56:10,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:56:10,082 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1536301701, now seen corresponding path program 1 times [2020-10-13 23:56:10,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:10,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068775911] [2020-10-13 23:56:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:10,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:10,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 23:56:10,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:56:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-13 23:56:10,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:10,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:56:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:56:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:56:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:10,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:10,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:56:10,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068775911] [2020-10-13 23:56:10,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:56:10,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 23:56:10,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16891675] [2020-10-13 23:56:10,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:56:10,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:10,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:56:10,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:56:10,755 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2020-10-13 23:56:10,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:10,907 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-13 23:56:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:56:10,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 23:56:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:10,909 INFO L225 Difference]: With dead ends: 34 [2020-10-13 23:56:10,909 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:56:10,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:56:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:56:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:56:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:56:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:56:10,916 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 21 [2020-10-13 23:56:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:10,917 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:56:10,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:56:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:56:10,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:56:10,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:10,918 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 23:56:10,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:56:10,919 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:10,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1534454659, now seen corresponding path program 1 times [2020-10-13 23:56:10,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:10,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014796072] [2020-10-13 23:56:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:10,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014796072] [2020-10-13 23:56:10,939 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-13 23:56:10,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:56:10,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-13 23:56:10,940 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-13 23:56:10,940 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 23:56:10,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:56:10,960 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 23:56:10,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:56:10 BoogieIcfgContainer [2020-10-13 23:56:10,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 23:56:10,963 INFO L168 Benchmark]: Toolchain (without parser) took 2907.11 ms. Allocated memory was 148.9 MB in the beginning and 240.6 MB in the end (delta: 91.8 MB). Free memory was 104.3 MB in the beginning and 203.4 MB in the end (delta: -99.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 23:56:10,964 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 23:56:10,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.58 ms. Allocated memory is still 148.9 MB. Free memory was 103.9 MB in the beginning and 93.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-13 23:56:10,966 INFO L168 Benchmark]: Boogie Preprocessor took 125.87 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 183.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-13 23:56:10,967 INFO L168 Benchmark]: RCFGBuilder took 361.74 ms. Allocated memory is still 206.0 MB. Free memory was 183.5 MB in the beginning and 167.0 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-10-13 23:56:10,968 INFO L168 Benchmark]: TraceAbstraction took 2156.96 ms. Allocated memory was 206.0 MB in the beginning and 240.6 MB in the end (delta: 34.6 MB). Free memory was 167.0 MB in the beginning and 203.4 MB in the end (delta: -36.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 23:56:10,971 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.58 ms. Allocated memory is still 148.9 MB. Free memory was 103.9 MB in the beginning and 93.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.87 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 183.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.74 ms. Allocated memory is still 206.0 MB. Free memory was 183.5 MB in the beginning and 167.0 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2156.96 ms. Allocated memory was 206.0 MB in the beginning and 240.6 MB in the end (delta: 34.6 MB). Free memory was 167.0 MB in the beginning and 203.4 MB in the end (delta: -36.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: 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: [L6] int a[100000]; [L7] int b[100000]; [L8] int k; [L9] int i; [L10] i = 0 [L10] COND TRUE i<100000 [L12] a[i] = i [L13] b[i] = i [L10] i++ [L10] COND FALSE !(i<100000) [L15] i=0 [L15] COND TRUE i< 100000 [L17] COND FALSE !(__VERIFIER_nondet_short()) [L15] i++ [L15] COND FALSE !(i< 100000) [L24] i=0 [L24] COND TRUE i< 100000 [L26] EXPR a[i] [L26] EXPR b[i] [L26] EXPR a[i] == b[i] || b[i] == a[i] * a[i] [L26] EXPR b[i] [L26] EXPR a[i] [L26] EXPR a[i] [L26] EXPR a[i] == b[i] || b[i] == a[i] * a[i] [L26] CALL __VERIFIER_assert(a[i] == b[i] || b[i] == a[i] * a[i]) [L2] COND TRUE !(cond) [L2] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 32 SDslu, 75 SDs, 0 SdLazy, 117 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...