/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 03:33:13,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 03:33:13,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 03:33:13,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 03:33:13,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 03:33:13,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 03:33:13,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 03:33:13,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 03:33:13,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 03:33:13,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 03:33:13,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 03:33:13,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 03:33:13,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 03:33:13,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 03:33:13,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 03:33:13,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 03:33:13,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 03:33:13,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 03:33:13,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 03:33:13,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 03:33:13,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 03:33:13,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 03:33:13,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 03:33:13,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 03:33:13,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 03:33:13,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 03:33:13,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 03:33:13,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 03:33:13,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 03:33:13,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 03:33:13,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 03:33:13,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 03:33:13,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 03:33:13,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 03:33:13,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 03:33:13,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 03:33:13,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 03:33:13,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 03:33:13,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 03:33:13,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 03:33:13,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 03:33:13,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-01 03:33:13,818 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 03:33:13,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 03:33:13,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 03:33:13,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 03:33:13,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 03:33:13,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 03:33:13,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 03:33:13,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 03:33:13,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 03:33:13,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 03:33:13,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 03:33:13,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 03:33:13,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 03:33:13,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 03:33:13,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 03:33:13,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 03:33:13,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 03:33:13,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 03:33:13,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 03:33:13,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 03:33:13,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 03:33:13,824 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-01 03:33:13,824 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 03:33:14,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 03:33:14,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 03:33:14,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 03:33:14,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 03:33:14,073 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 03:33:14,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2021-05-01 03:33:14,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc377c54/d77a1e45e06a43e58d00ec14630dd98d/FLAGa6055d15b [2021-05-01 03:33:14,553 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 03:33:14,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2021-05-01 03:33:14,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc377c54/d77a1e45e06a43e58d00ec14630dd98d/FLAGa6055d15b [2021-05-01 03:33:14,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc377c54/d77a1e45e06a43e58d00ec14630dd98d [2021-05-01 03:33:14,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 03:33:14,926 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-01 03:33:14,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 03:33:14,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 03:33:14,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 03:33:14,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:33:14" (1/1) ... [2021-05-01 03:33:14,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f76ded1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:14, skipping insertion in model container [2021-05-01 03:33:14,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:33:14" (1/1) ... [2021-05-01 03:33:14,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 03:33:14,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 03:33:15,076 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c[1224,1237] [2021-05-01 03:33:15,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:33:15,091 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 03:33:15,113 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c[1224,1237] [2021-05-01 03:33:15,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:33:15,130 INFO L208 MainTranslator]: Completed translation [2021-05-01 03:33:15,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15 WrapperNode [2021-05-01 03:33:15,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 03:33:15,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 03:33:15,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 03:33:15,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 03:33:15,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 03:33:15,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 03:33:15,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 03:33:15,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 03:33:15,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-01 03:33:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 03:33:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 03:33:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 03:33:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 03:33:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 03:33:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 03:33:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 03:33:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 03:33:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 03:33:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 03:33:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 03:33:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 03:33:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 03:33:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 03:33:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 03:33:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 03:33:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 03:33:15,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 03:33:15,516 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-01 03:33:15,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:33:15 BoogieIcfgContainer [2021-05-01 03:33:15,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 03:33:15,517 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-01 03:33:15,517 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-01 03:33:15,518 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-01 03:33:15,520 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:33:15" (1/1) ... [2021-05-01 03:33:15,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:33:15 BasicIcfg [2021-05-01 03:33:15,547 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-01 03:33:15,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 03:33:15,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 03:33:15,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 03:33:15,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 03:33:14" (1/4) ... [2021-05-01 03:33:15,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71746bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:33:15, skipping insertion in model container [2021-05-01 03:33:15,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:33:15" (2/4) ... [2021-05-01 03:33:15,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71746bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:33:15, skipping insertion in model container [2021-05-01 03:33:15,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:33:15" (3/4) ... [2021-05-01 03:33:15,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71746bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:33:15, skipping insertion in model container [2021-05-01 03:33:15,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:33:15" (4/4) ... [2021-05-01 03:33:15,551 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.cJordan [2021-05-01 03:33:15,566 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-01 03:33:15,574 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 03:33:15,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 03:33:15,613 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 03:33:15,613 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-01 03:33:15,613 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-01 03:33:15,613 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 03:33:15,613 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 03:33:15,613 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 03:33:15,613 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 03:33:15,613 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 03:33:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 03:33:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 03:33:15,632 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:33:15,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:33:15,633 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:33:15,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:33:15,637 INFO L82 PathProgramCache]: Analyzing trace with hash -963747291, now seen corresponding path program 1 times [2021-05-01 03:33:15,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:33:15,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653438384] [2021-05-01 03:33:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:33:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:33:15,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:15,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:33:15,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:15,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 03:33:15,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:15,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:33:15,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:33:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:33:15,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:15,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:33:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:33:15,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:33:15,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653438384] [2021-05-01 03:33:15,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653438384] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:33:15,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:33:15,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 03:33:15,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573974226] [2021-05-01 03:33:15,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 03:33:15,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:33:15,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 03:33:15,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 03:33:15,911 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:33:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:33:15,997 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-05-01 03:33:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 03:33:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 03:33:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:33:16,003 INFO L225 Difference]: With dead ends: 29 [2021-05-01 03:33:16,003 INFO L226 Difference]: Without dead ends: 20 [2021-05-01 03:33:16,004 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 03:33:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-01 03:33:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-05-01 03:33:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:33:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-05-01 03:33:16,024 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2021-05-01 03:33:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:33:16,024 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-05-01 03:33:16,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:33:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-05-01 03:33:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 03:33:16,025 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:33:16,025 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:33:16,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 03:33:16,025 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:33:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:33:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash -92546851, now seen corresponding path program 1 times [2021-05-01 03:33:16,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:33:16,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604258122] [2021-05-01 03:33:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:33:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:33:16,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:16,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:33:16,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:16,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-05-01 03:33:16,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:16,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 03:33:16,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:16,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:33:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:33:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:33:16,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:33:16,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:33:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:33:16,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:33:16,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604258122] [2021-05-01 03:33:16,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604258122] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:33:16,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:33:16,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 03:33:16,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346499309] [2021-05-01 03:33:16,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 03:33:16,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:33:16,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 03:33:16,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 03:33:16,256 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:33:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:33:16,448 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2021-05-01 03:33:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-01 03:33:16,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-01 03:33:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:33:16,448 INFO L225 Difference]: With dead ends: 18 [2021-05-01 03:33:16,449 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 03:33:16,449 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-01 03:33:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 03:33:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 03:33:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-01 03:33:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 03:33:16,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-01 03:33:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:33:16,450 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 03:33:16,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:33:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 03:33:16,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 03:33:16,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 03:33:16,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:33:16 BasicIcfg [2021-05-01 03:33:16,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 03:33:16,454 INFO L168 Benchmark]: Toolchain (without parser) took 1528.37 ms. Allocated memory is still 183.5 MB. Free memory was 149.4 MB in the beginning and 75.9 MB in the end (delta: 73.5 MB). Peak memory consumption was 73.9 MB. Max. memory is 8.0 GB. [2021-05-01 03:33:16,455 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 165.7 MB in the beginning and 165.6 MB in the end (delta: 106.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 03:33:16,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.18 ms. Allocated memory is still 183.5 MB. Free memory was 149.2 MB in the beginning and 139.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 03:33:16,456 INFO L168 Benchmark]: Boogie Preprocessor took 53.27 ms. Allocated memory is still 183.5 MB. Free memory was 139.6 MB in the beginning and 167.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2021-05-01 03:33:16,456 INFO L168 Benchmark]: RCFGBuilder took 331.26 ms. Allocated memory is still 183.5 MB. Free memory was 167.1 MB in the beginning and 154.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-01 03:33:16,456 INFO L168 Benchmark]: IcfgTransformer took 29.46 ms. Allocated memory is still 183.5 MB. Free memory was 154.0 MB in the beginning and 152.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 03:33:16,457 INFO L168 Benchmark]: TraceAbstraction took 906.11 ms. Allocated memory is still 183.5 MB. Free memory was 151.9 MB in the beginning and 75.9 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-05-01 03:33:16,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 165.7 MB in the beginning and 165.6 MB in the end (delta: 106.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 199.18 ms. Allocated memory is still 183.5 MB. Free memory was 149.2 MB in the beginning and 139.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.27 ms. Allocated memory is still 183.5 MB. Free memory was 139.6 MB in the beginning and 167.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 331.26 ms. Allocated memory is still 183.5 MB. Free memory was 167.1 MB in the beginning and 154.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 29.46 ms. Allocated memory is still 183.5 MB. Free memory was 154.0 MB in the beginning and 152.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 906.11 ms. Allocated memory is still 183.5 MB. Free memory was 151.9 MB in the beginning and 75.9 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 63]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 839.9ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 12.4ms, AutomataDifference: 302.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 46 SDslu, 19 SDs, 0 SdLazy, 54 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 268.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 81.6ms SatisfiabilityAnalysisTime, 338.7ms InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...