/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:51:34,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:51:34,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:51:34,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:51:34,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:51:34,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:51:34,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:51:34,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:51:34,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:51:34,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:51:34,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:51:34,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:51:34,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:51:34,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:51:34,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:51:34,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:51:34,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:51:34,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:51:34,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:51:34,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:51:34,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:51:34,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:51:34,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:51:34,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:51:34,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:51:34,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:51:34,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:51:34,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:51:34,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:51:34,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:51:34,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:51:34,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:51:34,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:51:34,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:51:34,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:51:34,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:51:34,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:51:34,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:51:34,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:51:34,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:51:34,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:51:34,831 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:51:34,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:51:35,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:51:35,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:51:35,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:51:35,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:51:35,119 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:51:35,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c [2021-05-02 20:51:35,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cc160ee/c237f9f62f824c0f9454818960742660/FLAG2829bed5c [2021-05-02 20:51:35,546 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:51:35,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c [2021-05-02 20:51:35,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cc160ee/c237f9f62f824c0f9454818960742660/FLAG2829bed5c [2021-05-02 20:51:35,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cc160ee/c237f9f62f824c0f9454818960742660 [2021-05-02 20:51:35,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:51:35,566 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:51:35,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:51:35,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:51:35,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:51:35,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399f31e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35, skipping insertion in model container [2021-05-02 20:51:35,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:51:35,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:51:35,701 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c[525,538] [2021-05-02 20:51:35,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:51:35,718 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:51:35,767 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c[525,538] [2021-05-02 20:51:35,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:51:35,779 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:51:35,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35 WrapperNode [2021-05-02 20:51:35,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:51:35,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:51:35,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:51:35,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:51:35,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (1/1) ... [2021-05-02 20:51:35,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:51:35,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:51:35,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:51:35,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:51:35,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (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 20:51:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:51:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:51:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:51:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:51:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:51:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:51:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:51:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:51:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:51:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:51:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:51:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:51:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:51:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:51:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:51:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:51:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:51:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:51:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:51:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:51:36,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:51:36,070 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 20:51:36,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:51:36 BoogieIcfgContainer [2021-05-02 20:51:36,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:51:36,071 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:51:36,071 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:51:36,072 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:51:36,073 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:51:36" (1/1) ... [2021-05-02 20:51:36,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:51:36 BasicIcfg [2021-05-02 20:51:36,084 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:51:36,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:51:36,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:51:36,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:51:36,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:51:35" (1/4) ... [2021-05-02 20:51:36,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702074ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:51:36, skipping insertion in model container [2021-05-02 20:51:36,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:35" (2/4) ... [2021-05-02 20:51:36,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702074ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:51:36, skipping insertion in model container [2021-05-02 20:51:36,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:51:36" (3/4) ... [2021-05-02 20:51:36,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702074ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:51:36, skipping insertion in model container [2021-05-02 20:51:36,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:51:36" (4/4) ... [2021-05-02 20:51:36,089 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound2.cJordan [2021-05-02 20:51:36,092 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:51:36,095 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:51:36,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:51:36,119 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:51:36,119 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:51:36,119 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:51:36,119 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:51:36,120 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:51:36,120 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:51:36,120 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:51:36,120 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:51:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:51:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 20:51:36,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:36,133 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:36,133 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:36,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:36,137 INFO L82 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2021-05-02 20:51:36,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:36,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255812785] [2021-05-02 20:51:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:36,203 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:36,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317457766] [2021-05-02 20:51:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 20:51:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:36,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 1 conjunts are in the unsatisfiable core [2021-05-02 20:51:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:36,290 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 20:51:36,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:36,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255812785] [2021-05-02 20:51:36,291 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:36,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317457766] [2021-05-02 20:51:36,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317457766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:51:36,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:51:36,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-02 20:51:36,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700556157] [2021-05-02 20:51:36,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-02 20:51:36,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:36,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-02 20:51:36,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-02 20:51:36,305 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 20:51:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:36,313 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 20:51:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-02 20:51:36,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 11 [2021-05-02 20:51:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:36,319 INFO L225 Difference]: With dead ends: 22 [2021-05-02 20:51:36,319 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 20:51:36,320 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-02 20:51:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 20:51:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 20:51:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:51:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 20:51:36,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-02 20:51:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:36,356 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 20:51:36,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 20:51:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 20:51:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 20:51:36,357 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:36,358 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:36,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-02 20:51:36,573 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2021-05-02 20:51:36,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:36,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411472950] [2021-05-02 20:51:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:36,613 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:36,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487881054] [2021-05-02 20:51:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:36,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 20:51:36,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:36,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:36,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:36,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:36,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:36,852 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 20:51:36,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:36,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411472950] [2021-05-02 20:51:36,853 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:36,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487881054] [2021-05-02 20:51:36,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487881054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:51:36,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:51:36,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 20:51:36,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489297396] [2021-05-02 20:51:36,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 20:51:36,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:36,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 20:51:36,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:51:36,855 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 20:51:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:36,869 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 20:51:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 20:51:36,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 12 [2021-05-02 20:51:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:36,873 INFO L225 Difference]: With dead ends: 19 [2021-05-02 20:51:36,873 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 20:51:36,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:51:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 20:51:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 20:51:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:51:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 20:51:36,876 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-05-02 20:51:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:36,876 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 20:51:36,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 20:51:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 20:51:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 20:51:36,877 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:36,877 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:37,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:37,093 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:37,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:37,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2021-05-02 20:51:37,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:37,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648171487] [2021-05-02 20:51:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:37,108 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:37,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775750354] [2021-05-02 20:51:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:37,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 20:51:37,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:37,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,194 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 20:51:37,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:37,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648171487] [2021-05-02 20:51:37,194 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:37,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775750354] [2021-05-02 20:51:37,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775750354] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:51:37,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:51:37,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 20:51:37,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005341568] [2021-05-02 20:51:37,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:51:37,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:37,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:51:37,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:51:37,195 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 20:51:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:37,217 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-02 20:51:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 20:51:37,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 20:51:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:37,218 INFO L225 Difference]: With dead ends: 26 [2021-05-02 20:51:37,218 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 20:51:37,218 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:51:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 20:51:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 20:51:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2021-05-02 20:51:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-02 20:51:37,221 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2021-05-02 20:51:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:37,221 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-02 20:51:37,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 20:51:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-02 20:51:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 20:51:37,222 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:37,222 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:37,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:37,438 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:37,438 INFO L82 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2021-05-02 20:51:37,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:37,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893237165] [2021-05-02 20:51:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:37,447 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:37,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506575398] [2021-05-02 20:51:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:37,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:51:37,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:37,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:37,619 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 20:51:37,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:37,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893237165] [2021-05-02 20:51:37,620 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:37,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506575398] [2021-05-02 20:51:37,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506575398] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:37,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:37,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 20:51:37,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939747977] [2021-05-02 20:51:37,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:51:37,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:51:37,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:51:37,621 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:51:37,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:37,641 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-05-02 20:51:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:51:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 20:51:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:37,642 INFO L225 Difference]: With dead ends: 27 [2021-05-02 20:51:37,642 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 20:51:37,642 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:51:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 20:51:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 20:51:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-05-02 20:51:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-05-02 20:51:37,645 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2021-05-02 20:51:37,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:37,645 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-05-02 20:51:37,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:51:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-05-02 20:51:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 20:51:37,646 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:37,646 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:37,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:37,862 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2021-05-02 20:51:37,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:37,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024093323] [2021-05-02 20:51:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:37,870 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:37,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193084219] [2021-05-02 20:51:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:37,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:51:37,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:38,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:38,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:51:38,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:38,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024093323] [2021-05-02 20:51:38,041 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:38,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193084219] [2021-05-02 20:51:38,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193084219] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:38,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:38,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:51:38,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530898245] [2021-05-02 20:51:38,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:51:38,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:51:38,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:51:38,043 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:51:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:43,752 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 20:51:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:51:43,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 20:51:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:43,753 INFO L225 Difference]: With dead ends: 34 [2021-05-02 20:51:43,753 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 20:51:43,753 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:51:43,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 20:51:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-05-02 20:51:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 5 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 20:51:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-05-02 20:51:43,756 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 20 [2021-05-02 20:51:43,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:43,756 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-05-02 20:51:43,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:51:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-05-02 20:51:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 20:51:43,757 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:43,757 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:43,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:43,958 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:43,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1181683872, now seen corresponding path program 1 times [2021-05-02 20:51:43,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:43,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17741257] [2021-05-02 20:51:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:43,966 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:43,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166954130] [2021-05-02 20:51:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:44,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 20:51:44,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:44,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:51:44,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:44,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17741257] [2021-05-02 20:51:44,162 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:44,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166954130] [2021-05-02 20:51:44,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166954130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:44,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:44,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:51:44,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084735872] [2021-05-02 20:51:44,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:51:44,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:44,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:51:44,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:51:44,163 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 20:51:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:46,262 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-05-02 20:51:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:51:46,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-05-02 20:51:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:46,264 INFO L225 Difference]: With dead ends: 37 [2021-05-02 20:51:46,264 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 20:51:46,265 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:51:46,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 20:51:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 20:51:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 6 states have call successors, (6), 5 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 20:51:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-05-02 20:51:46,267 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26 [2021-05-02 20:51:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:46,268 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-05-02 20:51:46,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 20:51:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-05-02 20:51:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:51:46,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:46,268 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:46,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:46,485 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash -870943837, now seen corresponding path program 2 times [2021-05-02 20:51:46,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:46,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662144076] [2021-05-02 20:51:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:46,492 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:46,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972995360] [2021-05-02 20:51:46,492 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:46,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:51:46,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:51:46,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 20:51:46,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:52,806 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 16 [2021-05-02 20:51:54,876 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 20:51:54,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:54,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:51:54,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:54,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662144076] [2021-05-02 20:51:54,950 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:54,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972995360] [2021-05-02 20:51:54,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972995360] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:54,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:54,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:51:54,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725578889] [2021-05-02 20:51:54,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:51:54,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:54,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:51:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=1, NotChecked=0, Total=90 [2021-05-02 20:51:54,951 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 20:52:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:17,322 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-05-02 20:52:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:52:17,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-02 20:52:17,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:17,323 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:52:17,323 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 20:52:17,325 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8202.8ms TimeCoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2021-05-02 20:52:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 20:52:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-05-02 20:52:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:52:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-05-02 20:52:17,330 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 28 [2021-05-02 20:52:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:17,331 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-05-02 20:52:17,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 20:52:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-05-02 20:52:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:52:17,331 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:17,331 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:17,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:17,541 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash -869871361, now seen corresponding path program 2 times [2021-05-02 20:52:17,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:17,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819279796] [2021-05-02 20:52:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:17,548 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:17,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027358963] [2021-05-02 20:52:17,549 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:17,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:52:17,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:52:17,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:52:17,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:17,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:52:17,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:17,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819279796] [2021-05-02 20:52:17,685 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:17,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027358963] [2021-05-02 20:52:17,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027358963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:17,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:17,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:52:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985501437] [2021-05-02 20:52:17,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:52:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:52:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:52:17,686 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 20:52:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:17,712 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-05-02 20:52:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:52:17,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-02 20:52:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:17,712 INFO L225 Difference]: With dead ends: 24 [2021-05-02 20:52:17,712 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:52:17,713 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:52:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:52:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:52:17,713 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 20:52:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:52:17,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-05-02 20:52:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:17,713 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:52:17,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 20:52:17,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:52:17,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:52:17,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-05-02 20:52:17,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:52:17 BasicIcfg [2021-05-02 20:52:17,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:52:17,932 INFO L168 Benchmark]: Toolchain (without parser) took 42365.90 ms. Allocated memory was 189.8 MB in the beginning and 244.3 MB in the end (delta: 54.5 MB). Free memory was 155.4 MB in the beginning and 186.7 MB in the end (delta: -31.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:17,932 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 189.8 MB. Free memory is still 172.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:52:17,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.91 ms. Allocated memory is still 189.8 MB. Free memory was 155.3 MB in the beginning and 172.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:17,932 INFO L168 Benchmark]: Boogie Preprocessor took 31.55 ms. Allocated memory is still 189.8 MB. Free memory was 172.8 MB in the beginning and 171.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:17,932 INFO L168 Benchmark]: RCFGBuilder took 257.09 ms. Allocated memory is still 189.8 MB. Free memory was 171.2 MB in the beginning and 156.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:17,933 INFO L168 Benchmark]: IcfgTransformer took 12.81 ms. Allocated memory is still 189.8 MB. Free memory was 156.5 MB in the beginning and 155.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:17,933 INFO L168 Benchmark]: TraceAbstraction took 41846.72 ms. Allocated memory was 189.8 MB in the beginning and 244.3 MB in the end (delta: 54.5 MB). Free memory was 155.0 MB in the beginning and 186.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:17,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 189.8 MB. Free memory is still 172.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 211.91 ms. Allocated memory is still 189.8 MB. Free memory was 155.3 MB in the beginning and 172.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.55 ms. Allocated memory is still 189.8 MB. Free memory was 172.8 MB in the beginning and 171.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 257.09 ms. Allocated memory is still 189.8 MB. Free memory was 171.2 MB in the beginning and 156.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 12.81 ms. Allocated memory is still 189.8 MB. Free memory was 156.5 MB in the beginning and 155.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 41846.72 ms. Allocated memory was 189.8 MB in the beginning and 244.3 MB in the end (delta: 54.5 MB). Free memory was 155.0 MB in the beginning and 186.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41811.5ms, OverallIterations: 8, TraceHistogramMax: 3, EmptinessCheckTime: 10.0ms, AutomataDifference: 30302.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 145 SDtfs, 54 SDslu, 383 SDs, 0 SdLazy, 204 SolverSat, 18 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 29844.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8387.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=7, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 82.2ms SsaConstructionTime, 227.3ms SatisfiabilityAnalysisTime, 8927.5ms InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 616 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1073 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 36/55 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...