/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 10:32:40,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 10:32:40,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 10:32:40,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 10:32:40,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 10:32:40,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 10:32:40,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 10:32:40,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 10:32:40,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 10:32:40,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 10:32:40,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 10:32:40,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 10:32:40,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 10:32:40,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 10:32:40,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 10:32:40,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 10:32:40,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 10:32:40,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 10:32:40,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 10:32:40,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 10:32:40,397 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 10:32:40,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 10:32:40,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 10:32:40,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 10:32:40,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 10:32:40,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 10:32:40,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 10:32:40,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 10:32:40,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 10:32:40,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 10:32:40,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-20 10:32:40,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 10:32:40,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 10:32:40,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 10:32:40,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 10:32:40,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 10:32:40,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 10:32:40,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 10:32:40,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 10:32:40,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 10:32:40,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 10:32:40,434 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 10:32:40,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 10:32:40,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 10:32:40,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 10:32:40,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 10:32:40,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 10:32:40,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 10:32:40,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 10:32:40,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 10:32:40,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 10:32:40,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 10:32:40,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 10:32:40,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 10:32:40,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 10:32:40,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 10:32:40,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 10:32:40,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 10:32:40,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 10:32:40,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 10:32:40,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 10:32:40,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 10:32:40,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 10:32:40,438 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 10:32:40,438 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 10:32:40,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 10:32:40,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 10:32:40,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 10:32:40,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 10:32:40,642 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 10:32:40,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound20.c [2022-03-20 10:32:40,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3578138/55ce8bd7184645a1a2810f567df51426/FLAG8efe9782a [2022-03-20 10:32:41,030 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 10:32:41,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound20.c [2022-03-20 10:32:41,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3578138/55ce8bd7184645a1a2810f567df51426/FLAG8efe9782a [2022-03-20 10:32:41,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3578138/55ce8bd7184645a1a2810f567df51426 [2022-03-20 10:32:41,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 10:32:41,493 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 10:32:41,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 10:32:41,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 10:32:41,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 10:32:41,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e096c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41, skipping insertion in model container [2022-03-20 10:32:41,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 10:32:41,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 10:32:41,704 WARN L230 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/freire1_valuebound20.c[712,725] [2022-03-20 10:32:41,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 10:32:41,722 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 10:32:41,730 WARN L230 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/freire1_valuebound20.c[712,725] [2022-03-20 10:32:41,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 10:32:41,742 INFO L208 MainTranslator]: Completed translation [2022-03-20 10:32:41,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41 WrapperNode [2022-03-20 10:32:41,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 10:32:41,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 10:32:41,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 10:32:41,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 10:32:41,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 10:32:41,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 10:32:41,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 10:32:41,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 10:32:41,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (1/1) ... [2022-03-20 10:32:41,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 10:32:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:32:41,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 10:32:41,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 10:32:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 10:32:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 10:32:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 10:32:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 10:32:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 10:32:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 10:32:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 10:32:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 10:32:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 10:32:41,871 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 10:32:41,872 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 10:32:41,996 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 10:32:42,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 10:32:42,000 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 10:32:42,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 10:32:42 BoogieIcfgContainer [2022-03-20 10:32:42,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 10:32:42,002 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 10:32:42,002 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 10:32:42,002 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 10:32:42,004 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 10:32:42" (1/1) ... [2022-03-20 10:32:42,006 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 10:32:42,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 10:32:42 BasicIcfg [2022-03-20 10:32:42,027 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 10:32:42,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 10:32:42,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 10:32:42,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 10:32:42,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 10:32:41" (1/4) ... [2022-03-20 10:32:42,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56333bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 10:32:42, skipping insertion in model container [2022-03-20 10:32:42,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:32:41" (2/4) ... [2022-03-20 10:32:42,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56333bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 10:32:42, skipping insertion in model container [2022-03-20 10:32:42,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 10:32:42" (3/4) ... [2022-03-20 10:32:42,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56333bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 10:32:42, skipping insertion in model container [2022-03-20 10:32:42,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 10:32:42" (4/4) ... [2022-03-20 10:32:42,032 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.cqvasr [2022-03-20 10:32:42,035 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 10:32:42,035 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 10:32:42,074 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 10:32:42,079 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 10:32:42,080 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 10:32:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 10:32:42,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 10:32:42,096 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:32:42,097 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:32:42,097 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:32:42,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:32:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash 409333534, now seen corresponding path program 1 times [2022-03-20 10:32:42,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:32:42,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257782938] [2022-03-20 10:32:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:32:42,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:32:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:32:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 10:32:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:32:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 10:32:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:32:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 10:32:42,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:32:42,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257782938] [2022-03-20 10:32:42,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257782938] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 10:32:42,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 10:32:42,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 10:32:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22372424] [2022-03-20 10:32:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:32:42,253 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 10:32:42,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:32:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 10:32:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 10:32:42,277 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 10:32:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:32:42,327 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-03-20 10:32:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 10:32:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-03-20 10:32:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:32:42,334 INFO L225 Difference]: With dead ends: 45 [2022-03-20 10:32:42,334 INFO L226 Difference]: Without dead ends: 22 [2022-03-20 10:32:42,336 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 10:32:42,339 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 10:32:42,340 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 10:32:42,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-20 10:32:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-20 10:32:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 10:32:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-03-20 10:32:42,366 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-03-20 10:32:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:32:42,366 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-03-20 10:32:42,367 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 10:32:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-03-20 10:32:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 10:32:42,368 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:32:42,368 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:32:42,368 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 10:32:42,368 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:32:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:32:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1396244096, now seen corresponding path program 1 times [2022-03-20 10:32:42,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:32:42,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590191769] [2022-03-20 10:32:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:32:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:32:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 10:32:42,384 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 10:32:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 10:32:42,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 10:32:42,403 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 10:32:42,404 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 10:32:42,405 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 10:32:42,407 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 10:32:42,409 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 10:32:42,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 10:32:42 BasicIcfg [2022-03-20 10:32:42,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 10:32:42,431 INFO L158 Benchmark]: Toolchain (without parser) took 938.10ms. Allocated memory is still 207.6MB. Free memory was 182.7MB in the beginning and 142.1MB in the end (delta: 40.6MB). Peak memory consumption was 41.2MB. Max. memory is 8.0GB. [2022-03-20 10:32:42,432 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 207.6MB. Free memory is still 169.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 10:32:42,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.04ms. Allocated memory is still 207.6MB. Free memory was 182.5MB in the beginning and 181.6MB in the end (delta: 948.5kB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-03-20 10:32:42,434 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 207.6MB. Free memory was 181.6MB in the beginning and 180.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 10:32:42,435 INFO L158 Benchmark]: RCFGBuilder took 225.05ms. Allocated memory is still 207.6MB. Free memory was 179.9MB in the beginning and 170.1MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 10:32:42,436 INFO L158 Benchmark]: IcfgTransformer took 25.31ms. Allocated memory is still 207.6MB. Free memory was 170.1MB in the beginning and 168.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 10:32:42,437 INFO L158 Benchmark]: TraceAbstraction took 402.59ms. Allocated memory is still 207.6MB. Free memory was 168.3MB in the beginning and 142.1MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-03-20 10:32:42,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 207.6MB. Free memory is still 169.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.04ms. Allocated memory is still 207.6MB. Free memory was 182.5MB in the beginning and 181.6MB in the end (delta: 948.5kB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 207.6MB. Free memory was 181.6MB in the beginning and 180.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 225.05ms. Allocated memory is still 207.6MB. Free memory was 179.9MB in the beginning and 170.1MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 25.31ms. Allocated memory is still 207.6MB. Free memory was 170.1MB in the beginning and 168.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 402.59ms. Allocated memory is still 207.6MB. Free memory was 168.3MB in the beginning and 142.1MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=20) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=20) VAL [a=50] [L29] x = a / 2.0 [L30] r = 0 VAL [a=50, r=0] [L32] COND TRUE 1 VAL [a=50, r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 25 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-03-20 10:32:42,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...