/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/loop-zilu/benchmark51_polynomial.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 19:09:52,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 19:09:52,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 19:09:52,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 19:09:52,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 19:09:52,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 19:09:52,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 19:09:52,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 19:09:52,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 19:09:52,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 19:09:52,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 19:09:52,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 19:09:52,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 19:09:52,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 19:09:52,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 19:09:52,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 19:09:52,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 19:09:52,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 19:09:52,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 19:09:52,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 19:09:52,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 19:09:52,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 19:09:52,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 19:09:52,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 19:09:52,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 19:09:52,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 19:09:52,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 19:09:52,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 19:09:52,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 19:09:52,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 19:09:52,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 19:09:52,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 19:09:52,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 19:09:52,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 19:09:52,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 19:09:52,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 19:09:52,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 19:09:52,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 19:09:52,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 19:09:52,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 19:09:52,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 19:09:52,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 19:09:52,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 19:09:52,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 19:09:52,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 19:09:52,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 19:09:52,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 19:09:52,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:09:52,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 19:09:52,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 19:09:52,700 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 19:09:52,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 19:09:52,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 19:09:53,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 19:09:53,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 19:09:53,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 19:09:53,018 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 19:09:53,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark51_polynomial.i [2021-05-02 19:09:53,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0317843a6/d8252eac1a35461a926e182296a08ff9/FLAGfb6f1a632 [2021-05-02 19:09:53,479 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 19:09:53,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark51_polynomial.i [2021-05-02 19:09:53,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0317843a6/d8252eac1a35461a926e182296a08ff9/FLAGfb6f1a632 [2021-05-02 19:09:53,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0317843a6/d8252eac1a35461a926e182296a08ff9 [2021-05-02 19:09:53,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 19:09:53,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 19:09:53,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 19:09:53,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 19:09:53,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 19:09:53,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:09:53" (1/1) ... [2021-05-02 19:09:53,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4beb2c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:53, skipping insertion in model container [2021-05-02 19:09:53,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:09:53" (1/1) ... [2021-05-02 19:09:53,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 19:09:53,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 19:09:54,017 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark51_polynomial.i[872,885] [2021-05-02 19:09:54,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:09:54,039 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 19:09:54,052 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark51_polynomial.i[872,885] [2021-05-02 19:09:54,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:09:54,117 INFO L208 MainTranslator]: Completed translation [2021-05-02 19:09:54,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54 WrapperNode [2021-05-02 19:09:54,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 19:09:54,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 19:09:54,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 19:09:54,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 19:09:54,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 19:09:54,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 19:09:54,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 19:09:54,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 19:09:54,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (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 19:09:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 19:09:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 19:09:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 19:09:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 19:09:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 19:09:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 19:09:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 19:09:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 19:09:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 19:09:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 19:09:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 19:09:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 19:09:54,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 19:09:54,423 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 19:09:54,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:54 BoogieIcfgContainer [2021-05-02 19:09:54,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 19:09:54,425 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 19:09:54,425 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 19:09:54,426 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 19:09:54,428 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:54" (1/1) ... [2021-05-02 19:09:54,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:09:54 BasicIcfg [2021-05-02 19:09:54,442 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 19:09:54,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 19:09:54,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 19:09:54,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 19:09:54,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 07:09:53" (1/4) ... [2021-05-02 19:09:54,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f90a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:09:54, skipping insertion in model container [2021-05-02 19:09:54,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:54" (2/4) ... [2021-05-02 19:09:54,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f90a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:09:54, skipping insertion in model container [2021-05-02 19:09:54,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:54" (3/4) ... [2021-05-02 19:09:54,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f90a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:09:54, skipping insertion in model container [2021-05-02 19:09:54,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:09:54" (4/4) ... [2021-05-02 19:09:54,457 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark51_polynomial.iJordan [2021-05-02 19:09:54,462 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 19:09:54,465 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 19:09:54,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 19:09:54,529 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 19:09:54,529 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 19:09:54,529 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 19:09:54,529 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 19:09:54,529 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 19:09:54,530 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 19:09:54,530 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 19:09:54,530 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 19:09:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 19:09:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 19:09:54,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:54,546 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:54,546 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:54,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:54,550 INFO L82 PathProgramCache]: Analyzing trace with hash -383999135, now seen corresponding path program 1 times [2021-05-02 19:09:54,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:54,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039738191] [2021-05-02 19:09:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:54,752 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 19:09:54,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:54,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039738191] [2021-05-02 19:09:54,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039738191] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:09:54,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:09:54,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 19:09:54,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997831884] [2021-05-02 19:09:54,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 19:09:54,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 19:09:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:09:54,779 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:09:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:54,837 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-05-02 19:09:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 19:09:54,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 19:09:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:54,848 INFO L225 Difference]: With dead ends: 22 [2021-05-02 19:09:54,849 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 19:09:54,850 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:09:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 19:09:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 19:09:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:09:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-02 19:09:54,878 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-05-02 19:09:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:54,879 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-02 19:09:54,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:09:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-02 19:09:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 19:09:54,880 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:54,881 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:54,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 19:09:54,881 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:54,884 INFO L82 PathProgramCache]: Analyzing trace with hash -383075614, now seen corresponding path program 1 times [2021-05-02 19:09:54,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:54,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019015402] [2021-05-02 19:09:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:55,037 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 19:09:55,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:55,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019015402] [2021-05-02 19:09:55,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019015402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:09:55,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:09:55,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 19:09:55,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271180365] [2021-05-02 19:09:55,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 19:09:55,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:55,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 19:09:55,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 19:09:55,041 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:09:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:55,134 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-05-02 19:09:55,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 19:09:55,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 19:09:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:55,136 INFO L225 Difference]: With dead ends: 13 [2021-05-02 19:09:55,136 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 19:09:55,137 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 19:09:55,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 19:09:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 19:09:55,138 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 19:09:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 19:09:55,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-02 19:09:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:55,139 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 19:09:55,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:09:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 19:09:55,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 19:09:55,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 19:09:55,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:09:55 BasicIcfg [2021-05-02 19:09:55,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 19:09:55,147 INFO L168 Benchmark]: Toolchain (without parser) took 1252.73 ms. Allocated memory is still 196.1 MB. Free memory was 161.1 MB in the beginning and 109.4 MB in the end (delta: 51.8 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:55,148 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 196.1 MB. Free memory was 177.5 MB in the beginning and 177.3 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:09:55,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.50 ms. Allocated memory is still 196.1 MB. Free memory was 160.9 MB in the beginning and 179.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:55,152 INFO L168 Benchmark]: Boogie Preprocessor took 25.40 ms. Allocated memory is still 196.1 MB. Free memory was 179.6 MB in the beginning and 178.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:55,153 INFO L168 Benchmark]: RCFGBuilder took 279.84 ms. Allocated memory is still 196.1 MB. Free memory was 178.0 MB in the beginning and 163.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:55,162 INFO L168 Benchmark]: IcfgTransformer took 17.28 ms. Allocated memory is still 196.1 MB. Free memory was 163.4 MB in the beginning and 162.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:55,163 INFO L168 Benchmark]: TraceAbstraction took 701.37 ms. Allocated memory is still 196.1 MB. Free memory was 161.8 MB in the beginning and 109.4 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:55,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 196.1 MB. Free memory was 177.5 MB in the beginning and 177.3 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 223.50 ms. Allocated memory is still 196.1 MB. Free memory was 160.9 MB in the beginning and 179.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.40 ms. Allocated memory is still 196.1 MB. Free memory was 179.6 MB in the beginning and 178.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 279.84 ms. Allocated memory is still 196.1 MB. Free memory was 178.0 MB in the beginning and 163.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 17.28 ms. Allocated memory is still 196.1 MB. Free memory was 163.4 MB in the beginning and 162.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 701.37 ms. Allocated memory is still 196.1 MB. Free memory was 161.8 MB in the beginning and 109.4 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 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 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 614.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 188.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 25 SDslu, 19 SDs, 0 SdLazy, 29 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 126.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 50.4ms SatisfiabilityAnalysisTime, 179.0ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...