/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+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 03:47:17,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 03:47:17,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 03:47:17,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 03:47:17,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 03:47:17,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 03:47:17,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 03:47:17,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 03:47:17,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 03:47:17,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 03:47:17,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 03:47:17,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 03:47:17,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 03:47:17,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 03:47:17,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 03:47:17,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 03:47:17,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 03:47:17,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 03:47:17,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 03:47:17,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 03:47:17,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 03:47:17,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 03:47:17,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 03:47:17,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 03:47:17,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 03:47:17,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 03:47:17,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 03:47:17,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 03:47:17,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 03:47:17,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 03:47:17,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 03:47:17,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 03:47:17,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 03:47:17,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 03:47:17,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 03:47:17,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 03:47:17,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 03:47:17,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 03:47:17,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 03:47:17,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 03:47:17,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 03:47:17,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-04-16 03:47:17,635 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 03:47:17,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 03:47:17,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 03:47:17,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 03:47:17,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 03:47:17,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 03:47:17,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 03:47:17,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 03:47:17,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 03:47:17,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 03:47:17,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 03:47:17,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 03:47:17,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 03:47:17,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 03:47:17,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 03:47:17,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 03:47:17,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 03:47:17,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 03:47:17,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 03:47:17,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 03:47:17,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 03:47:17,641 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-04-16 03:47:17,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 03:47:17,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 03:47:17,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 03:47:17,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 03:47:17,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 03:47:17,983 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 03:47:17,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2021-04-16 03:47:18,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fab8bc42/63038f77a4a94299a12a23892f80cf35/FLAG1289efc2b [2021-04-16 03:47:18,553 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 03:47:18,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2021-04-16 03:47:18,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fab8bc42/63038f77a4a94299a12a23892f80cf35/FLAG1289efc2b [2021-04-16 03:47:19,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fab8bc42/63038f77a4a94299a12a23892f80cf35 [2021-04-16 03:47:19,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 03:47:19,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-16 03:47:19,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 03:47:19,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 03:47:19,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 03:47:19,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607a1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19, skipping insertion in model container [2021-04-16 03:47:19,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 03:47:19,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 03:47:19,187 WARN L226 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+sep-reducer.c[2031,2044] [2021-04-16 03:47:19,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:47:19,202 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 03:47:19,218 WARN L226 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+sep-reducer.c[2031,2044] [2021-04-16 03:47:19,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:47:19,234 INFO L208 MainTranslator]: Completed translation [2021-04-16 03:47:19,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19 WrapperNode [2021-04-16 03:47:19,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 03:47:19,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 03:47:19,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 03:47:19,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 03:47:19,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 03:47:19,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 03:47:19,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 03:47:19,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 03:47:19,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (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 [2021-04-16 03:47:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 03:47:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 03:47:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 03:47:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 03:47:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 03:47:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 03:47:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 03:47:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 03:47:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 03:47:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 03:47:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 03:47:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 03:47:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 03:47:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 03:47:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 03:47:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 03:47:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 03:47:19,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 03:47:19,664 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-16 03:47:19,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:47:19 BoogieIcfgContainer [2021-04-16 03:47:19,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 03:47:19,665 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-04-16 03:47:19,665 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-04-16 03:47:19,666 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-04-16 03:47:19,668 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:47:19" (1/1) ... [2021-04-16 03:47:19,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:47:19 BasicIcfg [2021-04-16 03:47:19,689 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-04-16 03:47:19,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 03:47:19,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 03:47:19,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 03:47:19,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 03:47:19" (1/4) ... [2021-04-16 03:47:19,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a18fcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:47:19, skipping insertion in model container [2021-04-16 03:47:19,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:47:19" (2/4) ... [2021-04-16 03:47:19,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a18fcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:47:19, skipping insertion in model container [2021-04-16 03:47:19,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:47:19" (3/4) ... [2021-04-16 03:47:19,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a18fcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:47:19, skipping insertion in model container [2021-04-16 03:47:19,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:47:19" (4/4) ... [2021-04-16 03:47:19,697 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+sep-reducer.cJordan [2021-04-16 03:47:19,701 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-04-16 03:47:19,705 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 03:47:19,718 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 03:47:19,741 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 03:47:19,742 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-16 03:47:19,742 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-04-16 03:47:19,742 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 03:47:19,742 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 03:47:19,742 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 03:47:19,742 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 03:47:19,742 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 03:47:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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) [2021-04-16 03:47:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-16 03:47:19,763 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:47:19,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:47:19,764 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:47:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:47:19,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1219544613, now seen corresponding path program 1 times [2021-04-16 03:47:19,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:47:19,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921778373] [2021-04-16 03:47:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:47:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:47:20,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:47:20,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:47:20,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:47:20,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-04-16 03:47:20,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:47:20,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:47:20,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:47:20,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:47:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:47:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:47:20,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:47:20,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:47:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:47:20,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921778373] [2021-04-16 03:47:20,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:47:20,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 03:47:20,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328814259] [2021-04-16 03:47:20,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 03:47:20,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:47:20,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 03:47:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 03:47:20,234 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-04-16 03:47:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:47:20,729 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2021-04-16 03:47:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 03:47:20,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 15 [2021-04-16 03:47:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:47:20,735 INFO L225 Difference]: With dead ends: 37 [2021-04-16 03:47:20,735 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 03:47:20,736 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 03:47:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 03:47:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 03:47:20,753 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) [2021-04-16 03:47:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 03:47:20,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-04-16 03:47:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:47:20,755 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 03:47:20,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-04-16 03:47:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 03:47:20,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 03:47:20,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 03:47:20,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:47:20 BasicIcfg [2021-04-16 03:47:20,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 03:47:20,760 INFO L168 Benchmark]: Toolchain (without parser) took 1729.65 ms. Allocated memory is still 179.3 MB. Free memory was 145.3 MB in the beginning and 157.7 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 03:47:20,761 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 179.3 MB. Free memory was 162.5 MB in the beginning and 162.4 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 03:47:20,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.57 ms. Allocated memory is still 179.3 MB. Free memory was 145.1 MB in the beginning and 134.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-04-16 03:47:20,762 INFO L168 Benchmark]: Boogie Preprocessor took 58.33 ms. Allocated memory is still 179.3 MB. Free memory was 134.8 MB in the beginning and 163.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-04-16 03:47:20,762 INFO L168 Benchmark]: RCFGBuilder took 370.44 ms. Allocated memory is still 179.3 MB. Free memory was 163.1 MB in the beginning and 145.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-04-16 03:47:20,763 INFO L168 Benchmark]: IcfgTransformer took 23.76 ms. Allocated memory is still 179.3 MB. Free memory was 145.4 MB in the beginning and 144.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 03:47:20,763 INFO L168 Benchmark]: TraceAbstraction took 1068.61 ms. Allocated memory is still 179.3 MB. Free memory was 143.9 MB in the beginning and 157.7 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 03:47:20,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 179.3 MB. Free memory was 162.5 MB in the beginning and 162.4 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 193.57 ms. Allocated memory is still 179.3 MB. Free memory was 145.1 MB in the beginning and 134.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.33 ms. Allocated memory is still 179.3 MB. Free memory was 134.8 MB in the beginning and 163.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 370.44 ms. Allocated memory is still 179.3 MB. Free memory was 163.1 MB in the beginning and 145.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 23.76 ms. Allocated memory is still 179.3 MB. Free memory was 145.4 MB in the beginning and 144.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1068.61 ms. Allocated memory is still 179.3 MB. Free memory was 143.9 MB in the beginning and 157.7 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 97]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1017.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.6ms, AutomataDifference: 515.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 17 SDslu, 32 SDs, 0 SdLazy, 63 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 418.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.6ms SsaConstructionTime, 123.8ms SatisfiabilityAnalysisTime, 234.5ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...