/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/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:54:15,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:54:15,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:54:15,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:54:15,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:54:15,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:54:15,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:54:15,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:54:15,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:54:15,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:54:15,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:54:15,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:54:15,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:54:15,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:54:15,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:54:15,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:54:15,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:54:15,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:54:15,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:54:15,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:54:15,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:54:15,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:54:15,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:54:15,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:54:15,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:54:15,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:54:15,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:54:15,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:54:15,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:54:15,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:54:15,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:54:15,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:54:15,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:54:15,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:54:15,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:54:15,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:54:15,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:54:15,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:54:15,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:54:15,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:54:15,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:54:15,821 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 23:54:15,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:54:15,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:54:15,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:54:15,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:54:15,849 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:54:15,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:54:15,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:54:15,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:54:15,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:54:15,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:54:15,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:54:15,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:54:15,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:54:15,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:54:15,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:54:15,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:54:15,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:54:15,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:54:15,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:54:15,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:54:15,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:54:15,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:54:15,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:54:15,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:54:15,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:54:15,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:54:15,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:54:15,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:54:15,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:54:15,854 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 23:54:16,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:54:16,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:54:16,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:54:16,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:54:16,163 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:54:16,163 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-10-13 23:54:16,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed55cc329/328c94ae9a56447593728bc3b29fb62f/FLAG6d98a20a3 [2020-10-13 23:54:16,688 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:54:16,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-10-13 23:54:16,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed55cc329/328c94ae9a56447593728bc3b29fb62f/FLAG6d98a20a3 [2020-10-13 23:54:17,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed55cc329/328c94ae9a56447593728bc3b29fb62f [2020-10-13 23:54:17,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:54:17,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:54:17,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:54:17,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:54:17,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:54:17,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9c96c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17, skipping insertion in model container [2020-10-13 23:54:17,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:54:17,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:54:17,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:54:17,349 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:54:17,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:54:17,486 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:54:17,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17 WrapperNode [2020-10-13 23:54:17,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:54:17,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:54:17,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:54:17,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:54:17,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (1/1) ... [2020-10-13 23:54:17,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:54:17,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:54:17,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:54:17,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:54:17,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (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 23:54:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:54:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:54:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:54:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:54:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:54:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:54:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:54:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:54:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:54:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:54:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 23:54:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:54:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:54:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 23:54:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:54:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:54:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:54:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:54:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:54:17,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:54:17,906 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 23:54:17,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:17 BoogieIcfgContainer [2020-10-13 23:54:17,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:54:17,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:54:17,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:54:17,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:54:17,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:54:17" (1/3) ... [2020-10-13 23:54:17,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29716b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:17, skipping insertion in model container [2020-10-13 23:54:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:17" (2/3) ... [2020-10-13 23:54:17,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29716b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:17, skipping insertion in model container [2020-10-13 23:54:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:17" (3/3) ... [2020-10-13 23:54:17,920 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-10-13 23:54:17,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:54:17,939 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:54:17,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:54:17,992 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:54:17,992 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:54:17,993 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:54:17,993 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:54:17,993 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:54:17,993 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:54:17,993 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:54:17,993 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:54:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-13 23:54:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:54:18,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:18,032 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 23:54:18,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-10-13 23:54:18,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:18,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842039388] [2020-10-13 23:54:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:18,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:18,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:54:18,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:54:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-13 23:54:18,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:18,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:54:18,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:18,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:54:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:54:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:18,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:18,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:54:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:54:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:54:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:54:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:18,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:18,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:54:18,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:54:18,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:18,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:54:18,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:18,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:18,765 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 23:54:18,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842039388] [2020-10-13 23:54:18,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:54:18,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:54:18,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513701894] [2020-10-13 23:54:18,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:54:18,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:54:18,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:54:18,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:54:18,793 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-13 23:54:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:54:18,898 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-10-13 23:54:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:54:18,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 23:54:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:54:18,909 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:54:18,909 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 23:54:18,913 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 23:54:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 23:54:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-13 23:54:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 23:54:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-13 23:54:18,956 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-10-13 23:54:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:54:18,956 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-13 23:54:18,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:54:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-13 23:54:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:54:18,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:18,958 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 23:54:18,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:54:18,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-10-13 23:54:18,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:18,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843724748] [2020-10-13 23:54:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:18,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:54:19,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:54:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-13 23:54:19,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:19,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:54:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:54:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:54:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:19,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:54:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:19,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:19,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:54:19,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:19,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:54:19,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:19,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:54:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:19,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:19,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:54:19,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:54:19,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:19,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:19,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:54:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:54:19,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:19,287 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 23:54:19,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843724748] [2020-10-13 23:54:19,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:54:19,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:54:19,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970564397] [2020-10-13 23:54:19,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:54:19,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:54:19,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:54:19,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:54:19,292 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-13 23:54:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:54:19,393 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-13 23:54:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:54:19,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-13 23:54:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:54:19,395 INFO L225 Difference]: With dead ends: 37 [2020-10-13 23:54:19,395 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:54:19,397 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 23:54:19,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:54:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 23:54:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:54:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-13 23:54:19,405 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-10-13 23:54:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:54:19,405 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-13 23:54:19,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:54:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-13 23:54:19,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:54:19,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:19,407 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 23:54:19,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:54:19,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:19,408 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-10-13 23:54:19,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:19,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207606012] [2020-10-13 23:54:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:19,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:20,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:20,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:54:20,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:54:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-10-13 23:54:20,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:20,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:54:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:54:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 23:54:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:54:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:20,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:54:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:54:20,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:20,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:54:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:54:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:54:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:54:20,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:54:20,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:54:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:54:20,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:54:20,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:54:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:54:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:54:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:54:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:54:20,533 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 23:54:20,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207606012] [2020-10-13 23:54:20,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:54:20,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:54:20,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828870296] [2020-10-13 23:54:20,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:54:20,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:54:20,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:54:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:54:20,537 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-10-13 23:54:21,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:54:21,062 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 23:54:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:54:21,062 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-13 23:54:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:54:21,066 INFO L225 Difference]: With dead ends: 42 [2020-10-13 23:54:21,066 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:54:21,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:54:21,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:54:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-13 23:54:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:54:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:54:21,076 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-10-13 23:54:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:54:21,077 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:54:21,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:54:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:54:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:54:21,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:54:21,078 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 23:54:21,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:54:21,079 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:54:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:54:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-10-13 23:54:21,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:54:21,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709122859] [2020-10-13 23:54:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:54:21,091 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 23:54:21,091 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 23:54:21,091 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 23:54:21,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:54:21,113 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 23:54:21,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:54:21 BoogieIcfgContainer [2020-10-13 23:54:21,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 23:54:21,117 INFO L168 Benchmark]: Toolchain (without parser) took 3993.67 ms. Allocated memory was 148.9 MB in the beginning and 243.3 MB in the end (delta: 94.4 MB). Free memory was 105.3 MB in the beginning and 193.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:21,118 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 23:54:21,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.55 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 105.1 MB in the beginning and 184.1 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:21,120 INFO L168 Benchmark]: Boogie Preprocessor took 44.32 ms. Allocated memory is still 205.5 MB. Free memory was 184.1 MB in the beginning and 181.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:21,121 INFO L168 Benchmark]: RCFGBuilder took 379.35 ms. Allocated memory is still 205.5 MB. Free memory was 181.8 MB in the beginning and 164.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:21,122 INFO L168 Benchmark]: TraceAbstraction took 3201.11 ms. Allocated memory was 205.5 MB in the beginning and 243.3 MB in the end (delta: 37.7 MB). Free memory was 164.8 MB in the beginning and 193.8 MB in the end (delta: -29.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2020-10-13 23:54:21,126 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 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.55 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 105.1 MB in the beginning and 184.1 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.32 ms. Allocated memory is still 205.5 MB. Free memory was 184.1 MB in the beginning and 181.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.35 ms. Allocated memory is still 205.5 MB. Free memory was 181.8 MB in the beginning and 164.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3201.11 ms. Allocated memory was 205.5 MB in the beginning and 243.3 MB in the end (delta: 37.7 MB). Free memory was 164.8 MB in the beginning and 193.8 MB in the end (delta: -29.0 MB). Peak memory consumption was 8.7 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] = 1 [L30] i=0 [L30] COND TRUE i