/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/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:50:07,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:50:07,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:50:07,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 17:50:07,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 17:50:07,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 17:50:07,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 17:50:07,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 17:50:07,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 17:50:07,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 17:50:07,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 17:50:07,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 17:50:07,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:50:07,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:50:07,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:50:07,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:50:07,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:50:07,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:50:07,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:50:07,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:50:07,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:50:07,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:50:07,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:50:07,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:50:07,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:50:07,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 17:50:07,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 17:50:07,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 17:50:07,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:50:07,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:50:07,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:50:07,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:50:07,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:50:07,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:50:07,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:50:07,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:50:07,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:50:07,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:50:07,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:50:07,614 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:50:07,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:50:07,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:50:07,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:50:07,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:50:07,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:50:07,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:50:07,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:50:07,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:50:07,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:50:07,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:50:07,617 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:50:07,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:50:07,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:50:07,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:50:07,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:50:07,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:50:07,954 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:50:07,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-05-02 17:50:08,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e054c40/1a8f721eddff47d6b33da82ebf7c9c57/FLAG265501d5a [2021-05-02 17:50:08,487 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:50:08,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-05-02 17:50:08,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e054c40/1a8f721eddff47d6b33da82ebf7c9c57/FLAG265501d5a [2021-05-02 17:50:08,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e054c40/1a8f721eddff47d6b33da82ebf7c9c57 [2021-05-02 17:50:08,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:50:08,921 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:50:08,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:50:08,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:50:08,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:50:08,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:50:08" (1/1) ... [2021-05-02 17:50:08,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60bdd3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:08, skipping insertion in model container [2021-05-02 17:50:08,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:50:08" (1/1) ... [2021-05-02 17:50:08,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:50:08,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:50:09,124 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-05-02 17:50:09,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:50:09,152 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:50:09,165 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-05-02 17:50:09,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:50:09,209 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:50:09,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09 WrapperNode [2021-05-02 17:50:09,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:50:09,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:50:09,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:50:09,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:50:09,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:50:09,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:50:09,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:50:09,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:50:09,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (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 [2021-05-02 17:50:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:50:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:50:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:50:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:50:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2021-05-02 17:50:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:50:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:50:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:50:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 17:50:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 17:50:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:50:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:50:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:50:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2021-05-02 17:50:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:50:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:50:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:50:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:50:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:50:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:50:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:50:09,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:50:09,677 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 17:50:09,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:50:09 BoogieIcfgContainer [2021-05-02 17:50:09,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:50:09,680 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:50:09,680 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:50:09,680 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:50:09,697 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:50:09" (1/1) ... [2021-05-02 17:50:09,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:50:09 BasicIcfg [2021-05-02 17:50:09,723 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:50:09,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:50:09,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:50:09,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:50:09,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:50:08" (1/4) ... [2021-05-02 17:50:09,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eec166d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:50:09, skipping insertion in model container [2021-05-02 17:50:09,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:09" (2/4) ... [2021-05-02 17:50:09,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eec166d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:50:09, skipping insertion in model container [2021-05-02 17:50:09,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:50:09" (3/4) ... [2021-05-02 17:50:09,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eec166d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:50:09, skipping insertion in model container [2021-05-02 17:50:09,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:50:09" (4/4) ... [2021-05-02 17:50:09,731 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.iJordan [2021-05-02 17:50:09,757 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:50:09,762 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:50:09,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:50:09,794 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:50:09,795 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:50:09,795 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:50:09,795 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:50:09,795 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:50:09,795 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:50:09,795 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:50:09,795 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:50:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:50:09,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 17:50:09,814 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:50:09,814 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:50:09,815 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:50:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:50:09,819 INFO L82 PathProgramCache]: Analyzing trace with hash 612194795, now seen corresponding path program 1 times [2021-05-02 17:50:09,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:50:09,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919783106] [2021-05-02 17:50:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:50:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:50:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 17:50:10,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:50:10,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919783106] [2021-05-02 17:50:10,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919783106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:50:10,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:50:10,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 17:50:10,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574975872] [2021-05-02 17:50:10,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 17:50:10,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:50:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 17:50:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 17:50:10,171 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 17:50:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:50:10,618 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-05-02 17:50:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 17:50:10,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 17:50:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:50:10,625 INFO L225 Difference]: With dead ends: 37 [2021-05-02 17:50:10,626 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 17:50:10,627 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 368.5ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-02 17:50:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 17:50:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-02 17:50:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:50:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-02 17:50:10,654 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2021-05-02 17:50:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:50:10,654 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-02 17:50:10,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 17:50:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-02 17:50:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 17:50:10,655 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:50:10,655 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:50:10,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:50:10,656 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:50:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:50:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1895818048, now seen corresponding path program 1 times [2021-05-02 17:50:10,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:50:10,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546248030] [2021-05-02 17:50:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:50:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:50:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-02 17:50:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 17:50:10,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:50:10,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546248030] [2021-05-02 17:50:10,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546248030] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:50:10,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592864069] [2021-05-02 17:50:10,836 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 [2021-05-02 17:50:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:10,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 17:50:10,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:50:11,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 17:50:11,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592864069] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:50:11,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:50:11,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-05-02 17:50:11,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374856235] [2021-05-02 17:50:11,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 17:50:11,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:50:11,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 17:50:11,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-05-02 17:50:11,246 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:50:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:50:11,667 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-05-02 17:50:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 17:50:11,669 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2021-05-02 17:50:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:50:11,672 INFO L225 Difference]: With dead ends: 32 [2021-05-02 17:50:11,672 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 17:50:11,673 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 468.7ms TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-05-02 17:50:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 17:50:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 17:50:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:50:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-02 17:50:11,678 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2021-05-02 17:50:11,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:50:11,678 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-02 17:50:11,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:50:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-02 17:50:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 17:50:11,679 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:50:11,680 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:50:11,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 17:50:11,905 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:50:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:50:11,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1869530475, now seen corresponding path program 2 times [2021-05-02 17:50:11,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:50:11,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862682922] [2021-05-02 17:50:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:50:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:50:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-02 17:50:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 17:50:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 17:50:12,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:50:12,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862682922] [2021-05-02 17:50:12,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862682922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:50:12,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807070212] [2021-05-02 17:50:12,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-05-02 17:50:12,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-02 17:50:12,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:50:12,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 17:50:12,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:50:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:50:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 17:50:12,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807070212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:50:12,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:50:12,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-02 17:50:12,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630141228] [2021-05-02 17:50:12,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 17:50:12,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:50:12,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 17:50:12,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-05-02 17:50:12,340 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:50:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:50:12,600 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-05-02 17:50:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 17:50:12,600 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-05-02 17:50:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:50:12,601 INFO L225 Difference]: With dead ends: 30 [2021-05-02 17:50:12,601 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 17:50:12,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 326.0ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-05-02 17:50:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 17:50:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 17:50:12,602 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) [2021-05-02 17:50:12,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 17:50:12,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-05-02 17:50:12,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:50:12,602 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 17:50:12,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:50:12,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 17:50:12,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 17:50:12,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:50:12,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:50:12 BasicIcfg [2021-05-02 17:50:12,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 17:50:12,810 INFO L168 Benchmark]: Toolchain (without parser) took 3890.01 ms. Allocated memory was 191.9 MB in the beginning and 234.9 MB in the end (delta: 43.0 MB). Free memory was 157.6 MB in the beginning and 125.2 MB in the end (delta: 32.5 MB). Peak memory consumption was 77.0 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:12,811 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 191.9 MB. Free memory is still 174.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 17:50:12,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.35 ms. Allocated memory is still 191.9 MB. Free memory was 157.4 MB in the beginning and 176.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:12,816 INFO L168 Benchmark]: Boogie Preprocessor took 58.21 ms. Allocated memory is still 191.9 MB. Free memory was 176.0 MB in the beginning and 174.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:12,823 INFO L168 Benchmark]: RCFGBuilder took 408.94 ms. Allocated memory is still 191.9 MB. Free memory was 174.5 MB in the beginning and 159.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:12,823 INFO L168 Benchmark]: IcfgTransformer took 43.82 ms. Allocated memory is still 191.9 MB. Free memory was 159.3 MB in the beginning and 157.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:12,824 INFO L168 Benchmark]: TraceAbstraction took 3084.70 ms. Allocated memory was 191.9 MB in the beginning and 234.9 MB in the end (delta: 43.0 MB). Free memory was 157.7 MB in the beginning and 125.2 MB in the end (delta: 32.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:12,825 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 191.9 MB. Free memory is still 174.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.35 ms. Allocated memory is still 191.9 MB. Free memory was 157.4 MB in the beginning and 176.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.21 ms. Allocated memory is still 191.9 MB. Free memory was 176.0 MB in the beginning and 174.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 408.94 ms. Allocated memory is still 191.9 MB. Free memory was 174.5 MB in the beginning and 159.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 43.82 ms. Allocated memory is still 191.9 MB. Free memory was 159.3 MB in the beginning and 157.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3084.70 ms. Allocated memory was 191.9 MB in the beginning and 234.9 MB in the end (delta: 43.0 MB). Free memory was 157.7 MB in the beginning and 125.2 MB in the end (delta: 32.5 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: 16]: 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, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3012.2ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 11.3ms, AutomataDifference: 1165.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 101 SDslu, 130 SDs, 0 SdLazy, 317 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 300.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1163.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.3ms SsaConstructionTime, 121.1ms SatisfiabilityAnalysisTime, 1049.7ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 542 SizeOfPredicates, 15 NumberOfNonLiveVariables, 283 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 31/40 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...