/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/s22if.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:52:23,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:52:23,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:52:23,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:52:23,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:52:23,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:52:23,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:52:23,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:52:23,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:52:23,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:52:23,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:52:23,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:52:23,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:52:23,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:52:23,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:52:23,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:52:23,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:52:23,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:52:23,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:52:23,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:52:23,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:52:23,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:52:23,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:52:23,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:52:23,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:52:23,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:52:23,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:52:23,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:52:23,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:52:23,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:52:23,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:52:23,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:52:23,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:52:23,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:52:23,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:52:23,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:52:23,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:52:23,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:52:23,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:52:23,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:52:23,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:52:23,817 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 23:52:23,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:52:23,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:52:23,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:52:23,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:52:23,841 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:52:23,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:52:23,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:52:23,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:52:23,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:52:23,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:52:23,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:52:23,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:52:23,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:52:23,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:52:23,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:52:23,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:52:23,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:52:23,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:52:23,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:52:23,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:52:23,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:52:23,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:52:23,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:52:23,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:52:23,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:52:23,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:52:23,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:52:23,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:52:23,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:52:23,846 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 23:52:24,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:52:24,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:52:24,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:52:24,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:52:24,208 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:52:24,210 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s22if.c [2020-10-13 23:52:24,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2389a34ae/db09b6d44be9424c93c6c0610915823f/FLAG323c4771e [2020-10-13 23:52:24,744 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:52:24,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s22if.c [2020-10-13 23:52:24,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2389a34ae/db09b6d44be9424c93c6c0610915823f/FLAG323c4771e [2020-10-13 23:52:25,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2389a34ae/db09b6d44be9424c93c6c0610915823f [2020-10-13 23:52:25,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:52:25,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:52:25,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:52:25,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:52:25,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:52:25,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257856e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25, skipping insertion in model container [2020-10-13 23:52:25,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:52:25,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:52:25,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:52:25,368 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:52:25,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:52:25,409 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:52:25,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25 WrapperNode [2020-10-13 23:52:25,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:52:25,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:52:25,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:52:25,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:52:25,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (1/1) ... [2020-10-13 23:52:25,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:52:25,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:52:25,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:52:25,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:52:25,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (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 23:52:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:52:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:52:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:52:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:52:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:52:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:52:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:52:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:52:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:52:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:52:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 23:52:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:52:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:52:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 23:52:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:52:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:52:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:52:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:52:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:52:25,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:52:25,951 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:52:25,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:52:25 BoogieIcfgContainer [2020-10-13 23:52:25,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:52:25,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:52:25,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:52:25,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:52:25,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:52:25" (1/3) ... [2020-10-13 23:52:25,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d55ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:52:25, skipping insertion in model container [2020-10-13 23:52:25,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:25" (2/3) ... [2020-10-13 23:52:25,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d55ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:52:25, skipping insertion in model container [2020-10-13 23:52:25,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:52:25" (3/3) ... [2020-10-13 23:52:25,978 INFO L109 eAbstractionObserver]: Analyzing ICFG s22if.c [2020-10-13 23:52:25,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:52:25,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:52:26,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:52:26,033 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:52:26,033 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:52:26,033 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:52:26,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:52:26,033 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:52:26,034 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:52:26,034 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:52:26,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:52:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-13 23:52:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 23:52:26,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:52:26,064 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] [2020-10-13 23:52:26,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:52:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:52:26,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-10-13 23:52:26,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:52:26,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569938086] [2020-10-13 23:52:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:52:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:26,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:26,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 23:52:26,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:52:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-13 23:52:26,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:26,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:52:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:52:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:52:26,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:52:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:52:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:26,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:26,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:52:26,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:52:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:52:26,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:26,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:52:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:52:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:52:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:52:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:52:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:26,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:26,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:52:26,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:52:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:52:26,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:26,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:52:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:52:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:52:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:52:26,898 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 23:52:26,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569938086] [2020-10-13 23:52:26,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:52:26,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:52:26,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771492983] [2020-10-13 23:52:26,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:52:26,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:52:26,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:52:26,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:52:26,926 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-13 23:52:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:52:27,037 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-10-13 23:52:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:52:27,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-13 23:52:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:52:27,049 INFO L225 Difference]: With dead ends: 62 [2020-10-13 23:52:27,049 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:52:27,053 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 23:52:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:52:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-13 23:52:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:52:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:52:27,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-10-13 23:52:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:52:27,103 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:52:27,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:52:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:52:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 23:52:27,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:52:27,105 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] [2020-10-13 23:52:27,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:52:27,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:52:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:52:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-10-13 23:52:27,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:52:27,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686416631] [2020-10-13 23:52:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:52:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:27,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 23:52:27,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:52:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-13 23:52:27,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:27,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:52:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:52:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:52:27,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 23:52:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:52:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:27,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:27,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:52:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:52:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:52:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:27,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:52:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:52:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:52:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:52:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:52:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:27,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:52:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:52:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:52:27,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:27,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:52:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:52:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:52:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:52:27,543 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 23:52:27,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686416631] [2020-10-13 23:52:27,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:52:27,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:52:27,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423400468] [2020-10-13 23:52:27,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:52:27,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:52:27,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:52:27,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:52:27,549 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 23:52:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:52:27,733 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-13 23:52:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:52:27,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-13 23:52:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:52:27,735 INFO L225 Difference]: With dead ends: 46 [2020-10-13 23:52:27,736 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:52:27,737 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 23:52:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:52:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-13 23:52:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 23:52:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-13 23:52:27,755 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-13 23:52:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:52:27,756 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-13 23:52:27,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:52:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-13 23:52:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 23:52:27,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:52:27,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:52:27,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:52:27,759 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:52:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:52:27,759 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-10-13 23:52:27,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:52:27,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19987930] [2020-10-13 23:52:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:52:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:28,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:52:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:52:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3377 [2020-10-13 23:52:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:31,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:52:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:52:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:52:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:52:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:52:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:31,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:31,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:52:31,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:52:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:52:31,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:31,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:52:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:52:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:52:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:52:31,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:52:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:52:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:52:31,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:52:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:52:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:52:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:52:31,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:52:31,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:52:31,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:52:31,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:52:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:52:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:52:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:52:31,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19987930] [2020-10-13 23:52:31,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:52:31,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:52:31,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128253368] [2020-10-13 23:52:31,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:52:31,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:52:31,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:52:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:52:31,802 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 14 states. [2020-10-13 23:52:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:52:32,752 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-13 23:52:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:52:32,752 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-13 23:52:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:52:32,758 INFO L225 Difference]: With dead ends: 60 [2020-10-13 23:52:32,759 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:52:32,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:52:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:52:32,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2020-10-13 23:52:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:52:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-13 23:52:32,787 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 31 [2020-10-13 23:52:32,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:52:32,789 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-13 23:52:32,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:52:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-13 23:52:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 23:52:32,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:52:32,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:52:32,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:52:32,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:52:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:52:32,793 INFO L82 PathProgramCache]: Analyzing trace with hash -525143438, now seen corresponding path program 1 times [2020-10-13 23:52:32,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:52:32,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726454959] [2020-10-13 23:52:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:52:32,818 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 23:52:32,819 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 23:52:32,819 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 23:52:32,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:52:32,850 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 23:52:32,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:52:32 BoogieIcfgContainer [2020-10-13 23:52:32,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 23:52:32,855 INFO L168 Benchmark]: Toolchain (without parser) took 7726.20 ms. Allocated memory was 147.3 MB in the beginning and 300.4 MB in the end (delta: 153.1 MB). Free memory was 103.5 MB in the beginning and 152.2 MB in the end (delta: -48.6 MB). Peak memory consumption was 104.5 MB. Max. memory is 7.1 GB. [2020-10-13 23:52:32,856 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-13 23:52:32,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.17 ms. Allocated memory is still 147.3 MB. Free memory was 103.5 MB in the beginning and 92.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-13 23:52:32,860 INFO L168 Benchmark]: Boogie Preprocessor took 126.32 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-13 23:52:32,861 INFO L168 Benchmark]: RCFGBuilder took 424.89 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 163.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-10-13 23:52:32,868 INFO L168 Benchmark]: TraceAbstraction took 6888.81 ms. Allocated memory was 203.9 MB in the beginning and 300.4 MB in the end (delta: 96.5 MB). Free memory was 162.2 MB in the beginning and 152.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2020-10-13 23:52:32,871 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.17 ms. Allocated memory is still 147.3 MB. Free memory was 103.5 MB in the beginning and 92.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.32 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.89 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 163.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6888.81 ms. Allocated memory was 203.9 MB in the beginning and 300.4 MB in the end (delta: 96.5 MB). Free memory was 162.2 MB in the beginning and 152.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i