/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 08:43:40,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 08:43:40,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 08:43:40,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 08:43:40,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 08:43:40,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 08:43:40,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 08:43:40,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 08:43:40,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 08:43:40,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 08:43:40,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 08:43:40,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 08:43:40,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 08:43:40,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 08:43:40,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 08:43:40,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 08:43:40,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 08:43:40,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 08:43:40,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 08:43:40,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 08:43:40,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 08:43:40,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 08:43:40,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 08:43:40,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 08:43:40,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 08:43:40,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 08:43:40,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 08:43:40,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 08:43:40,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 08:43:41,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 08:43:41,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 08:43:41,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 08:43:41,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 08:43:41,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 08:43:41,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 08:43:41,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 08:43:41,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 08:43:41,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 08:43:41,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 08:43:41,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 08:43:41,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 08:43:41,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 08:43:41,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 08:43:41,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 08:43:41,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 08:43:41,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 08:43:41,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 08:43:41,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 08:43:41,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 08:43:41,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 08:43:41,011 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 08:43:41,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 08:43:41,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 08:43:41,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 08:43:41,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 08:43:41,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 08:43:41,370 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 08:43:41,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound1.c [2021-05-06 08:43:41,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adeeff412/7c7993141dc14a4a8633a82f0887b968/FLAGc1478e8c9 [2021-05-06 08:43:41,841 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 08:43:41,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound1.c [2021-05-06 08:43:41,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adeeff412/7c7993141dc14a4a8633a82f0887b968/FLAGc1478e8c9 [2021-05-06 08:43:42,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adeeff412/7c7993141dc14a4a8633a82f0887b968 [2021-05-06 08:43:42,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 08:43:42,269 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 08:43:42,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 08:43:42,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 08:43:42,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 08:43:42,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ba5966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42, skipping insertion in model container [2021-05-06 08:43:42,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 08:43:42,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 08:43:42,415 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound1.c[525,538] [2021-05-06 08:43:42,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:43:42,433 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 08:43:42,443 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound1.c[525,538] [2021-05-06 08:43:42,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:43:42,459 INFO L208 MainTranslator]: Completed translation [2021-05-06 08:43:42,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42 WrapperNode [2021-05-06 08:43:42,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 08:43:42,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 08:43:42,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 08:43:42,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 08:43:42,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 08:43:42,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 08:43:42,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 08:43:42,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 08:43:42,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (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 [2021-05-06 08:43:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 08:43:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 08:43:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 08:43:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 08:43:42,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 08:43:42,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 08:43:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 08:43:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 08:43:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 08:43:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 08:43:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 08:43:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 08:43:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 08:43:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 08:43:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 08:43:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 08:43:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 08:43:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 08:43:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 08:43:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 08:43:42,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 08:43:42,914 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 08:43:42,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:43:42 BoogieIcfgContainer [2021-05-06 08:43:42,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 08:43:42,916 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 08:43:42,916 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 08:43:42,917 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 08:43:42,920 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:43:42" (1/1) ... [2021-05-06 08:43:42,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:43:42 BasicIcfg [2021-05-06 08:43:42,937 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 08:43:42,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 08:43:42,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 08:43:42,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 08:43:42,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 08:43:42" (1/4) ... [2021-05-06 08:43:42,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15417313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:43:42, skipping insertion in model container [2021-05-06 08:43:42,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:43:42" (2/4) ... [2021-05-06 08:43:42,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15417313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:43:42, skipping insertion in model container [2021-05-06 08:43:42,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:43:42" (3/4) ... [2021-05-06 08:43:42,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15417313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:43:42, skipping insertion in model container [2021-05-06 08:43:42,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:43:42" (4/4) ... [2021-05-06 08:43:42,943 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound1.cJordan [2021-05-06 08:43:42,948 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 08:43:42,951 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 08:43:42,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 08:43:42,980 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 08:43:42,981 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 08:43:42,981 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 08:43:42,981 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 08:43:42,981 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 08:43:42,981 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 08:43:42,981 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 08:43:42,981 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 08:43:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 08:43:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 08:43:42,998 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:43:42,998 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:43:42,999 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:43:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:43:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1338008438, now seen corresponding path program 1 times [2021-05-06 08:43:43,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:43:43,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559008652] [2021-05-06 08:43:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:43:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:43:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 08:43:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:43:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 08:43:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:43:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 08:43:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:43:43,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-06 08:43:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:43:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 08:43:43,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:43:43,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559008652] [2021-05-06 08:43:43,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559008652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:43:43,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:43:43,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 08:43:43,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114921690] [2021-05-06 08:43:43,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 08:43:43,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:43:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 08:43:43,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:43:43,282 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 08:43:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:43:43,386 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-05-06 08:43:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 08:43:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-06 08:43:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:43:43,394 INFO L225 Difference]: With dead ends: 31 [2021-05-06 08:43:43,395 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 08:43:43,397 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:43:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 08:43:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-06 08:43:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 08:43:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-05-06 08:43:43,429 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2021-05-06 08:43:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:43:43,429 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-05-06 08:43:43,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 08:43:43,430 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-05-06 08:43:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 08:43:43,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:43:43,432 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:43:43,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 08:43:43,432 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:43:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:43:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1251333530, now seen corresponding path program 1 times [2021-05-06 08:43:43,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:43:43,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536655345] [2021-05-06 08:43:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:43:43,473 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:43:43,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322186148] [2021-05-06 08:43:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:43:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:43:43,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 08:43:43,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:43:43,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-06 08:43:43,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:43:43,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536655345] [2021-05-06 08:43:43,858 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:43:43,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322186148] [2021-05-06 08:43:43,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322186148] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:43:43,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:43:43,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 08:43:43,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649448403] [2021-05-06 08:43:43,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 08:43:43,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:43:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 08:43:43,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-06 08:43:43,861 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 08:43:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:43:43,961 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-06 08:43:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 08:43:43,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-05-06 08:43:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:43:43,963 INFO L225 Difference]: With dead ends: 34 [2021-05-06 08:43:43,963 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 08:43:43,964 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-06 08:43:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 08:43:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-06 08:43:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 08:43:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-05-06 08:43:43,969 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2021-05-06 08:43:43,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:43:43,970 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-05-06 08:43:43,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 08:43:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-05-06 08:43:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-06 08:43:43,971 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:43:43,971 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:43:44,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 08:43:44,185 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:43:44,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:43:44,185 INFO L82 PathProgramCache]: Analyzing trace with hash -284720885, now seen corresponding path program 1 times [2021-05-06 08:43:44,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:43:44,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371961933] [2021-05-06 08:43:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:43:44,203 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:43:44,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127035288] [2021-05-06 08:43:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:43:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:43:44,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 08:43:44,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:43:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:44,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:44,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:44,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:44,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:43:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-06 08:43:44,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:43:44,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371961933] [2021-05-06 08:43:44,372 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:43:44,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127035288] [2021-05-06 08:43:44,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127035288] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:43:44,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:43:44,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 08:43:44,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436183888] [2021-05-06 08:43:44,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 08:43:44,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:43:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 08:43:44,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:43:44,374 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 08:43:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:43:44,401 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-05-06 08:43:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 08:43:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-05-06 08:43:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:43:44,402 INFO L225 Difference]: With dead ends: 23 [2021-05-06 08:43:44,402 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 08:43:44,403 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-06 08:43:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 08:43:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 08:43:44,403 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) [2021-05-06 08:43:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 08:43:44,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-06 08:43:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:43:44,404 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 08:43:44,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 08:43:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 08:43:44,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 08:43:44,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:43:44,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:43:44 BasicIcfg [2021-05-06 08:43:44,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 08:43:44,613 INFO L168 Benchmark]: Toolchain (without parser) took 2344.01 ms. Allocated memory is still 180.4 MB. Free memory was 146.0 MB in the beginning and 128.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2021-05-06 08:43:44,613 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 180.4 MB. Free memory was 162.5 MB in the beginning and 162.4 MB in the end (delta: 89.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:43:44,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.26 ms. Allocated memory is still 180.4 MB. Free memory was 145.7 MB in the beginning and 136.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-06 08:43:44,613 INFO L168 Benchmark]: Boogie Preprocessor took 24.92 ms. Allocated memory is still 180.4 MB. Free memory was 136.1 MB in the beginning and 134.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:43:44,613 INFO L168 Benchmark]: RCFGBuilder took 429.03 ms. Allocated memory is still 180.4 MB. Free memory was 134.6 MB in the beginning and 149.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-05-06 08:43:44,614 INFO L168 Benchmark]: IcfgTransformer took 21.36 ms. Allocated memory is still 180.4 MB. Free memory was 149.8 MB in the beginning and 148.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:43:44,614 INFO L168 Benchmark]: TraceAbstraction took 1673.89 ms. Allocated memory is still 180.4 MB. Free memory was 148.3 MB in the beginning and 128.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:43:44,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 180.4 MB. Free memory was 162.5 MB in the beginning and 162.4 MB in the end (delta: 89.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 188.26 ms. Allocated memory is still 180.4 MB. Free memory was 145.7 MB in the beginning and 136.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.92 ms. Allocated memory is still 180.4 MB. Free memory was 136.1 MB in the beginning and 134.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 429.03 ms. Allocated memory is still 180.4 MB. Free memory was 134.6 MB in the beginning and 149.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * IcfgTransformer took 21.36 ms. Allocated memory is still 180.4 MB. Free memory was 149.8 MB in the beginning and 148.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1673.89 ms. Allocated memory is still 180.4 MB. Free memory was 148.3 MB in the beginning and 128.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1630.7ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 11.5ms, AutomataDifference: 258.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 42 SDslu, 138 SDs, 0 SdLazy, 93 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 136.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 174.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.4ms SsaConstructionTime, 80.1ms SatisfiabilityAnalysisTime, 545.0ms InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 5 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 34/40 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...